Tim,
I see from your video that your Boss machine has a little slop in it where the head rides the rails.
We have 2 Bosses and one is pretty much unusable because there is so much slop. The other seems about like yours. On the sloppy one, the difference is the head -- the rails are the same distance apart but the grooves in the head are deeper, allowing more side to side wobble. Any ideas on how to tighten it up? I thought about somehow putting some shims in there, but how would one secure them. I'd like to get it in good working condition.
