I had several broken of the 22 and had to replace. I orderd a bag of 5mm flat headed pan screws from mcmastercar.com and tacked them on with my mig. Just grind down the nub of the old stud and the flat head sits nice flat and gives you a good area to tack to. The top, thickness of the bracket, washers, and strip of rubber are more than enough to put everything above the end of the treads of the pan heads and will allow everything to chinch down tight.
1 92461A200 1 Pack Class 8 Steel Nylon-insert Hex Flange Locknut, Znc-pltd, M5 Size, .8mm Pitch, 8mm W, 7.1mm H
2 91100A140 1 Pack Metric Znc-plated Steel Large-dia Flat Washer, M5 Screw Size, 15mm Od, 1mm-1.4mm Thick
3 91420A328 1 Pack Metric Flat Head Phillips Machine Screw, Zinc-plated Stl, M5 Size, 20mm Length, .8mm Pitch