Gents, just got done pressure testing my left fuel tank. While attaching a cap to the flop tube bulkhead fitting I noticed the fitting rotate. It did not break the seal as I leak checked it but it definitely moved. The flop tube bulkhead nut was torqued to spec, I thought the proseal would be enough to keep from rotating, apparently I was wrong. So, am I the only one having this problem? Also, how would you fix it? Remove access cover or install a smaller new one somewhere? Btw, the plans do not call for an anti rotation bracket here.