TBH I would use a reg SHS epoxy the rack in good & properI just found out that the piston was probably a fake, I have an other shs piston and the teeth material seems to be much stronger. I will retry the 100 rps with that piston.
Swiss cheesing @Lefse is the expertI am removing the final 8 teeth right now I do not how to Swiss cheese well so I think I will leave it like it is (it is a pre lightened one)
Making it a 7 teeth dsg could help but won't the FPS be really low tho?
Also I do not know if it will feed right now but I have a really good mag I will try hopefully it will work.