Also it's not a huge tank so if you can get it just close to level should be fine. You would have some wiggle room i would imagine and not have to get to the point of adding single sheets of paper under the shims.It is pretty padded. I’m going to leave it with water overnight and see how much it settles. I can’t get the shims until tomorrow anyways. I’m just happy the plumbing didn’t leak. I would’ve hated to cut out pieces and reglue