Some while back, I posted a picture of the mod I made to be able to hold the thin sleeve-nut behind the lower front of the tank panel. This nut and the screw feed through a rubber double-grommet that is virtually impossible to install into the panel and the metal plate behind at the same time. Simple solution: cut the grommet into two pieces! The big bit stays in the plate and the outer end sits on the retaining screw, and the two cut sections come together as the screw and sleeve-nut are tightened. So much easier!
Nick
Nick