The main problem with fuel tank hatches is the cr@p from the muffler creeping into the hatch crack and there is not much you can do about it.
its not that common to open this hatch at least for me its solve it and forget it and its been a year like that with the 4*60 and never opened it with the midstar.
on the other hand oil from the muffler is trying to creep in every time so not to solve one small problem by creating a much bigger one.

Alex