Agreed... I think most people are fairly reasonable as long as you let them know what's going on. We might not be very happy about it but at least mentally, your not left ruminating about what the hell is going on. Even more so if you've taken a "financial leap of faith". What's worse than waiting is being told when something will be ready and it is not. Especially when it drags on for weeks or even months. I've heard some shocking stories about warranty issues...
I'm glad you finally got your exhaust and it was worth the wait
T.