Perhaps it just ripped out in three different directions starting at the hole, when the cap squished it.
Might, (or might not), have anything to do with the fuel ...
I would assume he made them out of fuel resistant rubber, but maybe not ??? I'd send a picture to Dave at KDI, and he should send you another one for free. If the second one breaks, then you can be sure there's a problem with that part.
Perhaps it just ripped out in three different directions starting at the hole, when the cap squished it.
Might, (or might not), have anything to do with the fuel ...
I would assume he made them out of fuel resistant rubber, but maybe not ??? I'd send a picture to Dave at KDI, and he should send you another one for free. If the second one breaks, then you can be sure there's a problem with that part.