I have removed all the hoses and electrical out of the way and have removed 11 oil pan bolts but motor seams to be stuck. Is there something else I need to remove to get this power head off? I had a head corrode and got water into my oil so I ordered another head and gasket and planed to hone the cylinder walls and rering it. I thought I could get the cylinder block pan off without removing the power head but do to dowel sleeves it wont come off. Anybody have any helpful hints? Thanks