While working on floating BSC1, I noticed that the St1V1 actuator looked misaligned. I used some shims to measure, and while the gaps between the magnets on each side of the coil were different (.130 on one side, .060 on the other, the spec is .090 +/- .015), the parallelism wasn't too bad. The alignment of the actuators is checked out as part of the early testing, so the misalignment was likely not due to improper assembly. It's possible this actuator was whacked at some point, but it seems improbable that would result in a purely horizontal move (the coil is only supported at one end and would probably rotate instead of translate, and not be parallel anymore). I checked all the other actuators on St1 and St2, and they all pass, so I'm kind of at a loss. Pictures forthcoming.

Forgot to add: the alignment of this actuator has been fixed.