I recived my Choate Recoil Compensator in the mail today and put it on. The front sight came off really easy and then I put the new one on. Little did I know they have a pre 580 and post 580 model and I just jammed the pre 580 model on my 581 model ranch. Needless to say if won't slip on past the original sight posistion and I need some ideas on how to get it back off wihout ruining the finish or unit so I can return it and get the correct one. Needless to say I am pretty pissed at myself for doing this.