Originally Posted by
spclark
I can accept that!
Once used, the thinner selections will distort a little bit once allowed to move freely again, they can look 'warped' rather than flat.
Even if not present for spatial adjustments, having one in between two moving parts adds two more surfaces that hold lube, reducing wear.
yep, they are thin enough that a bit of mishandling can bend them, so some might end up looking wavy.
Also, they are thin and easy to lose, so some used derailleurs might not have the right fit or performance.
I've always applied a coating of grease to the shims, just to help things slide along. Or was it to attract more dirt and crud??
Hard to be sure.
Steve in Peoria