That's what concerns me, it's really easy to blame being slow on the time to get parts.
I went from the repair side to the parts supply side. They don't want to try pulling that with me, I know reality better than they do.
The cure would be very easy and I did this as a shop foreman. Early mornings is diagnostic time. Repairs left over from the night before can wait an hour so that you can check something out and get parts ordered. Order your parts, then finish fixing the current project. You're not wasting time to check it out, then waiting two weeks for parts. There's simply no excuse for it to wait two weeks before it's even checked out.
I'm going to give them until Thursday to call me, then I'm going to walk in, bypass service and hit the general manager. Let him explain to me why it's taking so long when I gave them a clear deadline which they said was no issue.
Now-2014 Sierra 346RETS 5er BUB
Then-2002 Keystone Springdale 286RLDS TT
Nights camped in 2014-28, 2015-127, 2016-10