When removing the set screws from the PTO, I found that they don't come out unless the hole in which they live is clean. So using a .30 cal.bore brush along with my drill motor, cleaned the holes out,and a follow up spray of WD-40, works super. As for the moment, while removing the eccentric collar bearing set screw, it simply snapped in two, and it was very easy to do and did not require any force at all to break. Now I'm stuck with trying to get the remainder of the screw out so I can proceed. These pics. should say it all. I will keep a post going on my experiences with this matter. Any advice is welcome, Thanks.