My buddy built me a stand I flub up on 1/4 in and it is a thumb nail un even on stand. Also the tank is 29 in and when I sit on floor and filled it up is has a some what distinct wobble when through my arm in and am messing in it. The stand did not wobble when unfilled. It is sittng on tile floor and non of the corners are sitting on a crack . idk what to think of this, It may be on a small tile ripple unseeable. it is even so idk whats wrong,