This is a direct quote from one of the team who wished to remain anonymous... "First answer: do not use jam. I know we are pretty much sorry we did. This is not to say jam is a horrible tool, but it does not fit well with a lot of complex build scenarios, and especially not with our build system which is very complex. Second answer: apart from a couple folks on my team and, presumably, the perforce folks, I don't know of any jam experts. My guys generally hold the first opinion, so I doubt they'll be looking to get more involved with jam issues than they already are..."