My turn signal lever sometimes doesn't engage, and stopped automatically turning off after a turn. Does anyone have insight as to which part(s) are most likely defective? Ideally I would like to pre-order what I need so I only have to take column apart once. And does anyone have advice on order of disassembly of column? I puttered around with it a bit and the shroud that covers the turn signal stem didn't want to come out peacefully!