Not to throw a monkey wrench in here, but as an ole' tight *** I have re-used the bolts over and over with the different mods of mine and they have never leaked. Just don't over torque them. On the breathers, I use high temp RTV, and let it set up, before re-install. Forms a nice gasket that way. Take your time, do a good job of cleaning them up, go with the gaskets and the right amount of RTV, and you should do well. I am taking them all off again this winter when I am back on my feet and having them buffed out. I could never see the VC's warping, but I guess everything is possible...good luck