Prior to setting the toilet on the flange with a wax ring, one should set the toilet in place without the ring. The base of the toilet should set firmly on the floor all the way around without rocking. If it does not, then shims are used to take out the rock. Then the toilet is lifted off, the wax ring put on the flange, and the toilet again placed in position but with the shims in place. Body weight is all that you should use to compress the wax ring. The flange bolts are not intended to pull the toilet down or to remove rocking. After the toilet base rests on the floor, the flange bolts are tighten to hold the toilet in place. Caulking around the base completes the installation.