Kempe, I can't say whether such strong measures are a good idea without really knowing how the whole drum mechanism works - but I doubt that is the best way to go forward, and I even doubt it would work. From the illustrated parts list it looks as if the clutch plate (the part with the two holes in it) screws onto the end of the drum shaft - the long shaft that goes all the way through both halves of the drum. If you can find a way to keep that shaft from rotating, it should be easy to unscrew the clutch plate from it. There might be a solution based on partly withdrawing the shaft so you can hold it. That is about as far as I can get without some better information. There are Outdoorking members who have done this job before - I hope one of them will step in here and tell us about it.