I am working on a project Tele using a $179 Affinity and the machine heads wobble around in the bushings on the head stock causing tuning issues. I want to see if I can shim these bushings to keep the machine heads from wobbling. With the strings off you can easily see them wobble. They wobble with the strings on whether you notice it or not. I was able to make shims that fit using polyethylene from a clear bag but the plastic is too thin. I tried aluminum foil but it was too hard to make it fit. I'd like to avoid buying new tuners and if I could remove the wobble these tuners would be fine. Has anyone been able to make sturdy shims for the machine head bushings?