[Crowbob]

I see I have two shafts that walked. One went right back in. The other will only go so far then stops abruptly (#3 exhaust). I can feel a slight ridge inside the bore at the edge that seems to be keeping the shaft from sliding all the way. I think the bore was damaged by the loose shaft. Does anyone have any ideas on how to fix this problem? I'm thinking about somehow sanding or filing (!) the little ridge. Since it's near or at the edge I think the expansion of the shaft will still bite and stay put. There is no scoring on the shaft.