I’m replacing a cast iron toilet flange using Oatey 4” closet flange and the rim of the flange is hitting the edge of the soil pipe. Seems like I either gotta cut the subfloor or cut the pipe to get it to fit right. Subfloor cutout is already too big so not really sure if that’s the correct adjustment. Also confused what the correct depth of this flange is…should the flange be screwed down onto the tile? The welded holes on the underside of the flange used to secure the gasket to the pipe are nearly the same distance from the center of the flange as the holes used for bolting the flange to the subfloor/finished surface. I could replace the tile and make the cutout with a smaller hole saw, but seems like I’d have to get crafty with an angle grinder in order to get a flush mount fit?