Hello, I'm in the middle of working towards replacing some parts in the cam / timing chain area, and am having trouble with getting the timing chain cover off.  I've done everything the manual says, and everything this forum says, but simply cannot get the rotor to budge.  I've removed the 3 little allen screws securing it in place, and left the bigger 8mm center screw alone (as per the forum and the manual.  Is this thing just gummed up / carboned in place? Should I pry at it a little?  I don't want to break anything, and this one is kind of important.  :|