I am having trouble finding out which brake set from Hayes this is. I think they are from around 2003 or so. The brake levers were spray painted and I can't see anything about them anywhere. I'm trying to buy brake pads and a bleed kit for them, so if you have any bleed kit recommendations let me know!
Looks like you have a set of Hayes HFX Max G1, you can use these pads. Surprisingly, a lot of other people experience the same issue as you.