Last set of TFs on H1-SR2 showed a longitudinal to yaw cross coupling at 1.51 and 2.77Hz. I adjusted the Coil Holder and recentered the BOSEMs.
 
   There were only two of the four Coil Holder Mounting Brackets installed, (which may be a source of the noise in this suspension and a contributor to the cross coupling) when the earlier TFs were taken. The missing two Mounting Brackets required modification due to misaligned mounting slots. These modifications were not completed in time to be installed on the suspension before it was moved to the LVEA. One of the Mounting Brackets was modified correctly; and has been installed on the suspension. The second Mounting Bracket was not modified correctly and will need to be reworked before it can be installed. Three of the four Mounting Brackets are now clamping the Coil Holder to the Weldment. 

   I have started a new set of TFs on H1-SR2, to see if the BOSEM adjustment and the addition of the third Mounting Bracket will improve the performance of the suspension over that revealed in the earlier TFs.