2- I keep having problems with the Z-axis slider in the
chamber/projector. Is it possible it's just me? It only works by
entering the number in the textbox or the arrows next to it. If you
touch it, the slider jumps to a random number (magnification) and no
longer moves from there. The slider does not work and the arrows next
to it do not work.

Today's checkin to GIT fixed the above.