No but I am close friends with one their top team drivers. Why do you think the back plates are riveted? That is so the general public cannot see that the engines they buy are not like the ones that are winnning big races on the professional level. Do you think the team guys don't know what is done to the engines they get? They are hand lapped and modified for both increased power and extended run time. That's also another reason why you won't ever see a team engine last more than 3-4 gallons. They fire them up right out of the box and beat the crap out of them. I would guess we all would do the same if our engines were free.
I know you have enough knowledge and common sense to realize this Chris. From reading your posts for the last 4 years I can tell your not a rookie.