Leveling a tank

[iflipsidei]

so here is what i did, where those 3 are sticking out i started with one shim the normal way in, then i put the shim you see in the big way first then on top of those i put another skinny side in and drove that all the way in. should i put more or any in the middle?

 

[markandkristen]

thats what i was going to suggest i would fillit up with tap water and see where your at than shim if needed