i am curently rebuilding a ms 390 that had low compression and minor scoring so I ordered a cross pop up with caber rings. Took the saw all apart and cylinder is junk so I ordered a hyway cylinder. But I was wondering if anyone has attempted to seal the pan to the cylinder out of the saw and then take the bolts out of the pan and put back in the saw. It just seams like it would be a little easier to not cover everything in Motoseal. Also should I replace the crank bearings while I’m in there. Thanks