HELP Bad Advise

I just triple checked and the clutch disc measures 10.5 so that should at least be right. I hear what you’re saying about the bell housing and that's what I said to him. However, I didn't trust my gut and already ground down the bell housing so what's done is done. The crappy part is that it seems to me that u guys are telling me I have a new flywheel that is only as good as a paper weight :banghead: