Ya, this is an old thread but for the guy who was looking for a "used old bag," I have one that I might part with. She is 70 years old and I will pay for the gas if you will come and take her off my hands. She is ultra high maintenance though. I just checked with her and she said she might go if the deal looked good.
I went to the screw in type fasteners (vs the 1/4 turn) after I had one half fall off.
I got home from a ride and it started to fall off as I went to pull in the garage.
No real damage, I got lucky.
I have the screw in type to. Never lost a bag but the pins were always coming out...Much better now