Quote Originally Posted by ryanmills View Post
There is a fair bit that is, knobs, gears and some of the basic metal parts. In my case the focus rack/guide and the bracket that connects the rear standard to the rack is really loose. Pretty unlikely those were off the shelf. Sounds like it's been a common issue. Would love to know the original tolerances. The way it connects I feel like it must have always had some play.
When I got mine, a very clean and light usage version, it had many loose small screws. I blamed shipping vibration. Airplanes and trucks vibrate.

I replaced some with off the shelf McMaster Carr and tightened most.

It also has some thin spacers that could be missing from yours.