I am that guy. I bought an unused alloy tank and side covers off of a forum member which originally came from Don Pender. It is a Lyta style with a Ceandess cap. I had it sprayed with Por15 after reading good reviews, doing a bunch of online looking and talking with my painter. There were several mishaps along the way which made it end up looking like this (and to me it looks better here): As you can see, the cap disc is not standard which I never noticed until the seal started failing. It came that way I discovered, because the filler neck is several mm smaller than standard diameter and a stock double lip disc fouls the neck. Whoever built this tank used a metal disc and bonded a standard seal to it. However, it was bonded with the seal lop up. Which is backwards from how they normally go. It leaked and caused the Por15 to bubble. So I trimmed back the bubbling finish and bought two AN filler seals and bonded one of them correctly to the cap using JB Weld. And put the other one in my bag for a 1500 mi trip a couple days later. At the first fill up saw that the seal was deforming and pulling away from the disc. I had to remove it and flip the disc over to the clean side and use the second seal just laid on the neck. It to deformed quickly and the leak continued for the remainder if the trip. When my local dealer contacted AN about the seals, they originally said that their supplier had used the incorrect material for them. But, after they heard about the tank damage, all went quiet. So, a comedy of errors and I have a nice and shitty looking tank.