I got a set of black aluminum seat bolt eliminators with the knurled knob so you don't have to use a hex wrench to remove the seat. The one on the right side now refuses to seat properly or stay in place. Although it has yet to fall out, I feel this is just a matter of time. There are no obvious issues with the seat mounting holes and the bolt doesn't appear to be stripped. Anyone else encounter this? A minor problem I know but annoying after paying for the bolt eliminators. Is there some kind of washer underneath the seat that locks down the bolt that could have fallen out of place?