Fil and Oli had already done this work yesterday, but Oli's result (posted in alog 91411) indicated that something was not right with ZM5 CD chassis. 

This morning Fil and I replaced it with the original chassis (was earlier used for ZM5 with 1.2kohm resistor) - however, Fil installed 100 Ohm resistors on this. 

Attached below are the screenshots for ZM5 L, P and Y dof. and they looks healthy - magnitude and peaks are in their place. 

ZM5 chassis installed today - D1100687, SN  S1200611 

Outgoing chassis - D1100687, S2001198