I'm not sure if this is in the right section or not, but I am in need of advice. I am in the process of disassembling my motor and have hit a stumbling block. I am having a really hard time removing my cas. I have removed the three bolts holding it on, but can not get the thing to even rotate. Am I missing something here? I have beat on it with a hammer and pried on it. I really don't want to damage anything.