I have opened my K5's 350, and found that (as predicted), the crankshaft is broken. The wobbling crank thrashed out the #1 main bearing, leaving it in wedges and splinters. The bearing seat now has a definite "flaring" (a widening, or reverse-taper) around the front edge. It seems so uniform that it makes me wonder whether this shape is intentional... since I've never rebuilt one before, I have no idea. So I guess I have two questions: 1) Is this the original shape of the bearing seat? 2) If not, is there a way that I can support a new bearing without laying a weird stress/heat pattern on it? Thanks to all you motorheads out there! Brian 'Chili' G.