My combine tank PROJECT with some diy (PICS WIll be HEAVY)

my first inclination would be to loosen the screws a bit... bang the top up a hair using a hammer and offcut piece for a block... jam a door shim between your verticle support and your horizontal top supports... tighten the screws back up... and possibly add the piece-together floor mats like gunner uses for apparently everything.
 
my first inclination would be to loosen the screws a bit... bang the top up a hair using a hammer and offcut piece for a block... jam a door shim between your verticle support and your horizontal top supports... tighten the screws back up... and possibly add the piece-together floor mats like gunner uses for apparently everything.


right now, I have the 3/8 piece under it. I will cut out a piece and put it under that top layer. And screw everything on it.
 
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