The last successful diff locking was on Thursday May 8, alog 11791 on May 9.
Below is a list of filter changes that happened on ETMX since then.

The two suspects are:
- L1 L2P filters
- ETMX_M0_DAMP_L filters

=====================================================
Date:
-rw-r--r--   1 controls controls 230237 May  9 23:29 H1SUSETMX_1083738611.txt
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< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 0 zpk([0.08374528339909944-i*0.2433218667356948;0.08374528339909944+i*0.2433218667356948; 
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Date:
-rw-r--r--   1 controls controls 237364 May 10 00:06 H1SUSETMX_1083740794.txt
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> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 0 zpk([0.04672029281627461+i*0.3883629479048338;0.04672029281627461-i*0.3883629479048338; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 1 zpk([0.01323117948903582+i*0.4349190738918082;0.01323117948903582-i*0.4349190738918082; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 5 zpk([0.0837452833985204+i*0.2433218667356947;0.0837452833985204-i*0.2433218667356947; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 0 zpk([0.04309093963903244+i*0.3314665390167811;0.04309093963903244-i*0.3314665390167811; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 1 zpk([0.3079048301517223;0.4191165157453778], 
=====================================================
Date:
-rw-r--r--   1 controls controls 237364 May 10 00:27 H1SUSETMX_1083742050.txt
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=====================================================
Date:
-rw-r--r--   1 controls controls 230526 May 10 00:42 H1SUSETMX_1083742948.txt
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< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 0 zpk([0.04672029281627461+i*0.3883629479048338;0.04672029281627461-i*0.3883629479048338; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 1 zpk([0.01323117948903582+i*0.4349190738918082;0.01323117948903582-i*0.4349190738918082; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 5 zpk([0.0837452833985204+i*0.2433218667356947;0.0837452833985204-i*0.2433218667356947; 
=====================================================
Date:
-rw-r--r--   1 controls controls 230526 May 10 01:32 H1SUSETMX_1083745955.txt
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=====================================================
Date:
-rw-r--r--   1 controls controls 246604 May 10 03:42 H1SUSETMX_1083753759.txt
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> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 0 zpk([0.831329491504266+i*0.9012257170546942;0.831329491504266-i*0.9012257170546942; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 1 zpk([0.002485877643515575-i*0.3946128198094371;0.002485877643515575+i*0.3946128198094371; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 5 zpk([0.08374528339823091+i*0.2433218667356947;0.08374528339823091-i*0.2433218667356947; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 0 zpk([0.05841220204334667+i*1.127241260196624;0.05841220204334667-i*1.127241260196624; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 1 zpk([-0.2851704563409714-i*0.2165396550111315;-0.2851704563409714+i*0.2165396550111315; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 5 zpk([0.04309093963845343+i*0.3314665390167811;0.04309093963845343-i*0.3314665390167811; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 6 zpk([0.3079048233615395;0.4191165225355606], 
> # DESIGN   ETMX_M0_DAMP_L 2 butter("BandPass",4,0.1,5)
> # DESIGN   ETMX_M0_DAMP_L 3 resgain(0.43,5,4)resgain(0.99,5,4)resgain(1.98,5,4)resgain(3.4,5,4)
=====================================================
Date:
-rw-r--r--   1 controls controls 245257 May 10 03:56 H1SUSETMX_1083754591.txt
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< # DESIGN   ETMX_M0_DAMP_L 2 butter("BandPass",4,0.1,5)
< # DESIGN   ETMX_M0_DAMP_L 3 resgain(0.43,5,4)resgain(0.99,5,4)resgain(1.98,5,4)resgain(3.4,5,4)
=====================================================
Date:
-rw-r--r--   1 controls controls 249180 May 12 10:15 H1SUSETMX_1083950161.txt
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> # DESIGN   ETMX_L1_DRIVEALIGN_L2P 4 zpk([0.831329491504266+i*0.9012257170546942;0.831329491504266-i*0.9012257170546942; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 5 zpk([0.04309093963845343+i*0.3314665390167811;0.04309093963845343-i*0.3314665390167811; 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 5 zpk([0.04309093963816393+i*0.3314665390167811;0.04309093963816393-i*0.3314665390167811; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 6 zpk([0.3079048233615395;0.4191165225355606], 
> # DESIGN   ETMX_L1_DRIVEALIGN_L2Y 6 zpk([0.3079048301514328;0.4191165157450882], 
=====================================================
Date:
-rw-r--r--   1 controls controls 245252 May 12 10:26 H1SUSETMX_1083950783.txt
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< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 4 zpk([0.831329491504266+i*0.9012257170546942;0.831329491504266-i*0.9012257170546942; 
=====================================================
Date:
-rw-r--r--   1 controls controls 237890 May 12 10:36 H1SUSETMX_1083951424.txt
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< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 0 zpk([0.831329491504266+i*0.9012257170546942;0.831329491504266-i*0.9012257170546942; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 1 zpk([0.002485877643515575-i*0.3946128198094371;0.002485877643515575+i*0.3946128198094371; 
< # DESIGN   ETMX_L1_DRIVEALIGN_L2P 5 zpk([0.08374528339823091+i*0.2433218667356947;0.08374528339823091-i*0.2433218667356947;