Quote:

My current plan is just keep buying busted Karmas on ebay and replacing my scroll wheels as they break.


A nice fat glob of expoxy around the base of a (non-broken) scroll wheel should prevent it from breaking in the future.

They don't actually "break", but rather they detach from the tiny surface mount solder pads that are unable to hold them in place (ala. the Empeg IDE header).

Cheers