Check this sand a penny on both sides till it is polished mirror like start with 120 grit then end with 1000 grit.then put some paste on both sides put the penny on the core then atatch the gorb to the slocket.you will have to use a little more force to twist it on but it is nice and snug after and you loose 3-4 deg when i run burn p6 i use to top out at 46 now it fluctuates between 42 and 43