Just a little bit of progress tonight. A couple of the filler plugs were slightly proud, so the washers backing up the socket head cap screws weren’t sitting flat. Took the rotary tool with a grinder to them and got them cleaned up.
Put most of the parts back onto the head and conducted a quick test with nearly the full weight to see how the Z behaved. Got it to stall running it too fast (>150IPM) but otherwise it seems to work. The ball screw does sound like it might be under more strain, but it’s lifting the head fine.
