When this is the case, the cylinder head gasket will not tighten level and the excess alloy must be removed.
Having done much smaller areas the day before, I knew this was going to work, the process was now understood and went very quickly. Do not over tighten the bolts, you may introduce distortion?
The Makita 3612 router, this model has an auto brake and stops very quickly, recomended!
The 13mm milling cutter, a tungsten tipped type will also work but the finish will not be as smooth?
Next I will show you how I fitted the 998cc steel liners into the alloy sockets which had distorted some 0.003" ?