Oh, I was considering using their 0.027" gasket when I do a head swap, to decrease compression over the replacement 0.040" gasket. The head obviously will be decked down to 70cc or the smallest chamber I can get. So that surface should be fine. But my 42k mile bottom end I'm planning to keep as is, since it is low mileage and pretty tight. But it sounds like the factory deck finish might not be compatible with the MLS gasket? Maybe I need to stick with the rebuilder gasket until I rebuild the bottom end when I can afford the machine shop work and a decent set of pistons?
