thank you :)
If in doubt the measurements for the 400x400x400 mm version
X - 1x 500 mm
Y - 2x 450 mm
Z - 3x 500 mm
I strongly suggest, you don’t tighten down the bolts. Not even snug. Else the next steps to put in the iddler stacks are impossible. Wait untill the Iddler stack are in place, before you tighten the bolts to the frame.
Align one of the Screws with the flat part of the motorshaft, this makes the next step easier.
I was a bit confused here. But the shims needed, are the thin spacers in the bag, where there is a lot of them.