In fact, I do make p/s sets for 21 and 12 engines out of BRB and a lot of people saw my products yesterday and everybody was ammazed of them. You can find out easy from a lot of people who was there. BTW, on Winternats in Florida my product was shining- check around and people will tell you what I am talking about.
About Josh's engine, he didn't have any tuning problem at all. he got mechanical fail on engine and it was keep blowing plugs ( at list 4 or 5), which give enough clue to say that conrod is gone or piston cracked, btw, are you sure he wasn't running LCI? I saw what he was running, on his pit table, did you see it?
Please notice, that my coments here to not drive down the brand, I hate when reps are blaming racers for engine failuers-run in was done wrong, too lean, too reach etc, etc etc.