well I would be kind of surprised if he did, as when I did it a lot of people thought I was crazy, but HVAC got the tip about the yamabond from his buddy sportbike and we didn't really say anything to to many people, but I'm sure I told Brandon what I did---but it may have been the first time we tried the copper head gasket and it failed, but we used yamabond 5b on that gasket and we had only . 041 orings top and bottom with no receiver grooves(2nd go around we made receiver grooves and I changed one wire to . 051), so Brandon may have been leary about the yamabond--he may have used something that has been on the market for some time, I can't recall the name, but it's something like copperbond or coppergasket---it's in all the stores--also I'm pretty sure he has . 051 orings, but I don't know if there's one or two per cylinder and I'm not sure if he did receiver grooves--chris
Rubberneck would know if you can't get a hold of Brandon---chris