Toilet flange is 1" closer to wall (11") than desired. Already have the new toilet (not returnable) - standard 12". House is 1952 - cast iron. I can't do the "alcove" behind the tank deal because of stack and parallel vent location. The I.D. of my cast iron below the toilet is 3 1/2" -- My "research" seems to indicate that a 3.5" offset press-in flange is not a thing...? - that correct? So, I'm left with trying to do it "right." (and please, jump in anywhere you like if you have other advice/possibilities!) -- See attached pictures: I assume my first step is to sawzall off the flange pipe below the floor. Then I would drill and dig out (what I assume (?) will be) the lead in the hub on the stack. (Is heat used here to soften it up? or is that a no-no due to lead fumes?) Then replumb it all with a fermco fitting and PVC? --- Thanks in advance for your thoughts!