You all missed the mark on this one. It's the basics of manual transmission. If you guys were real technical support people you all would have pink slips.
Before installing new parts the bell housing needs to be inspected for cracks and checked for run-out and squareness while bolted to the block and all fasteners torqued to spec.
While I don't discount the need to check components, torque to spec. etc. I am curious as to how a misaligned bell housing would result in that wear pattern. If it were that far out of center or parallelism there would be other issues IMO.
