I must admit that I have a bit of trepidation that
the two pillars might become unsynchronized – one passing by the other pillar
height position. Image if it was more than an inch of height difference, causing
a dangerous tilt of the mount and scope, in an uncontrolled “lifter runaway” on
one side's motor. I would attached a cam’’d micro switch to each one, touching
the opposite surface,, each with a (very short) “Boss Bump” for the switch
levers to ride on and open or close the circuit. If one switch lever slips
too far past the other (inner facing) side, it immediately kills the lift power
to both, until reset by the user. This emergency override would be in addition
to any logic in the TWO lifters controller.
That would be a very inexpensive and simple safety
override precaution. But, I would feel more confident with a powerful, single
lift pillar, in such case.