My Briggs 44M777/2144-G1 engine has been leaking oil. I pulled the engine out and I am in the process of replacing the shaft seal and crankcase gasket. Started putting the cover back on and I can get it within about 1/16" of closing but it won't go further. It appears the crankshaft moved outward that 1/16" and won't allow the cover to close. Any advice in how I can get the crankshaft pushed back in that small amount?