I though I would try sensor correction again on HAM3 and I've figured out from whence comes the .6hz peak on that chamber. I don't know why, but turning on the Z sensor correction causes it. X&Y sensor correction still don't perform well on this chamber either, so I'll leave both HAM2 and HAM3 with sensor correction off and in a state that my script (previous post) won't turn on. Attached plot shows Z CPS, correction on(blue) and off(red), .6hz peak is pretty obvious. This contaminates other dofs, too.