Secondary Clutch Screw Up! HELP!

I installed the Dalton clutch kit on my 2014 RZR 1000. The 4 screws that hold the helix in broke off. I had to drill them out. Can anyone recommend a filler I can use to re-thread a hole. Does adding or removing that little amount of weight, like a different screw size or weight of filler, mess anything up?

Thanks!

Really screwed up an expensive part!!!