After everything else is right, you will apply acrylic caulk, to dress things up and keep water from going under the toilet. Many only caulk the front 90% to allow a leak from the toilet flange to be noticed. I use masking tape because I am not very practiced with the caulk use. Search for Polyseamseal on this forum for discussion of caulking toilet bases.
Yes! The shims were white plastic sold in the toilet parts area, they have a rough side so they can be stacked, I only needed the very edge, it really want much in the way of movement. Heck I think it moved less than the shims were thick. I have not polyseamsealed yet, as i was giving it a day or two to leak, hah
No no no. The flange is where it's supposed to be. The Korky should be fine. I am a little concerned about you just sticking a flange on top of what was obviously a lead pipe. That's what the so-called malleable material was. The toilet doesn't sit on the flange. The toilet sits on the floor. If it's wobbling, shim it from the rear. And do that when it has nothing between the flange and the toilet.
Well, I just did better what was already done. My situation mimics this one:
That lip on the lead sits on the floor, the flange twist seals into it. the flange is screwed to the floor, the toilet sits on top of it. That flange is 1/2 inch thick and sits right against the floor. I could find no alternative to the situation online, short of running all new PVC. Which, maybe down the line if I have to.
You mean shim, pull the toilet, put the seal down and then reapply the shims?