On Oct 13, 8:56*am, Phisherman wrote:
I'm installing *a new toilet on a basement floor. *I lined up the
flange slots with the bowl holes and traced around the perimeter of
the toilet. * When dry-fitted It slightly rocks on the concrete floor.
I can remove small amounts of the concrete with a Dremmel tool. *Is
there an easier way than trial-and-error to determine the high points?
How is this usually done? * I'm guessing that this rocking has to be
eliminated before I can proceed with the install? *TIA

Go to the hardware store and ask for white toilet shims. Lowe's
usually has them.