Anyone local to me capable of correcting errors on a 904 race build

I guarantee if I had a customer drop 4500 in my lap, I doubt they would ever be pissed enough to go on a forum to complain about any slight in service. I don't even consider doing that with the $150 kits I sell.

CRT is on notice that he has an unhappy customer... take the ball and run with it. I don't need the other side of the story. Handle the issue in a professional manner.

The OP isn't some hack either. He says it's a leaker and has some concerns.