Im not exactly a novice when it comes to woodworking, but Ive been having quite the time building these tank stands and getting them perfectly square. Part of my problem is the best 2x4's I could find arent great (for instance one of them has a taper in it and measures 1 1/4" at one end. After building and rebuilding multiple times I got it so that the first stand is solid but one corner is 3/16" high so it has a wobble. Im a perfectionist so half of me wants to start a bon fire and start over. Am I being ridiculous? Would you trust shims to compensate a wobble bearing 700lbs?