I've got the the front off (the part where one would select free or lock), but i cant get the next piece off (body or casing that looks like a 6 pointed star). If anyone has done this before, you know what i'm talking about. Is there some trick I'm missing? I took off all 6 nuts, but it dosent want to move. People keep telling me to use heat and expand it off as I have already tried a BFH already to no avail. please help.