[g__day (Matthew)]

So quite a bit of success!

I replaced the nylon spacer - bit of fiddly effort there - it is simply remove three bolt and the nylon spacer unit disconnects - you just have to make sure the bolts don't drop anywhere hard to get too as the motor housing flops down and feels rather loose and the bolts were just resting with friction and gravity...

The old nylon spacer unbolted easily - but the new spacer had one of its two attachment holes drilled in a slightly different location - about 4mm from the old unit holes. This wasn't too hard to re-drill and countersink with my drilling gear.


Reattaching the unit was challenging - as I found in my astro lab - custom built - the track sits about 4-5mm from the motor control unit - so I never knew this before and I guess I need to add packing pieces to the brackets - I had to apply a bit of strength omce teh slider was over the track to bend it 4 mm or so into position so the motor unit could attach to it!

So this means there is a lot of stress (and thus wear) on the outer edges of the nylon washer to pull the track into position this wears the outside corners of the slider badly over time!

I wonder if me mounting the dome on my own astro lab on the supplied ring means the motor unit sits differently to how it would sit in a full Sirius labs assembly.

To get around this I plan add 3-4mm packing pieces between each bracket and the track - so Astrolabs assembly will become dome -> bracket -> packing piece -> track to move it closer to the motor unit.

So question to folks with Sirius labs - for you does the track normally sit square in the middle of the nylon washer with no effort? If this is the case I guess I definitely need to simply add packing pieces.

So the track turns much better now - there is one pinch point in one direction where the track sticks - I think it needs to be either in 4 mm or down 1mm.