Just back from the track and got your message. My Andial motor runs about 20 lbs of boost and no head mods were done to compensate for this. Leakage occurred over time, but fortunately was spotted by my tech before serious damage was done. The lower fins on the heads were welded to reinforce, but that proved to be inadequate after a while as leakage reoccurred, again without damage. This time the heads were sent to Steve Weiner in Portland, OR who has access to a machine shop that can oring the heads in such a way that they don't leak oil, which evidently is routine with oringed heads. I've had the car back for about 6000 miles now and it seems to be fine. I would have your shop contact Steve to get things done right and that should remove the knot from your tummy. Good luck, Don

Hi, I'm in the process of repairing and head seal problem on my TT. After a long conversation with Kevin, he suggested I contact you to discuss your experience with this problem. The knot in my stomach is a bit overwhelming. i had the car for 2 months and now is in the shop. Any help would be great.