Just go buy some hex head self tappers and some spring clips. I replaced all mine last year no problem. See attached. I can't remember what size I used but I just bought three different sizes #6, #8 and #10. Same with the screws They are as cheap as chips. No 10 did the trick I think. Certainly a lot cheaper than those "quick release" originals which are a ridculous price. The screws in the pic are posidrive. I swapped them for the equivalent hex head later.