Therein lies what I would bet my bottom dollar on. Regretably, that's what I truly believe and why, It is still under warranty? I hate that it might be a manufacturers defect because I have lost all faith in the dealer.
Mark, will you be sending the brace back to Jim/GP Designs? It will be interesting to see if they take a look at it to see if there was some manufacturing defect or something, or just what else they have to say about it. As simple as the piece is in design and installation, it is difficult to assume it's something the dealer did during installation.
Also, not sure what reason they would have for shying away from correcting a crank runout problem.
If it's out of spec (and especially if the motor is still under warranty), why wouldn't they want to address it for you?