Originally Posted by cachehiker
The mechanics at your LBS are complete morons that should be removed from the gene pool.
Probably. You need a real mechanic, not your friends to diagnose the problem.
...its best to replace the bottom bracket when you do this as well.
Why? This is just like the bad advice his friends gave him. If the bottom bracket is ok, there is no need to change it, and it certainly isn't going to make your bike skip gears if it is bad.