I'm working on riveting the brackets in place on my 93 storm for my x-tra ten swap. The rivets are 1/4 inch diameter stainless steel .06 to .25 grip range. The rivet gun is a Marson big daddy. Just the steel bracket alone is .075 so these rivets should set no problem. The holes in the plate are dead nuts. The rivet barely goes in them and I tried it on a loose hole so it doesn't appear to be the hole size. I cant get them to set tightly. Every time they break off about 1/8 from being tight. I got one to set properly by spraying it with WD-40 after that I couldnt get it to work again. Now I'm frustrated and decided to call it quits before shit starts flying across the garage.