Hello, we removed our toilet in order to put down new flooring. While we were re-installing the toilet, my husband tightened the nut too tight and the flange broke. I went to the hardware store and purchased a new flange. Trying to get the old flange off, we also damaged the top of the sewer pipe (It's PVC.) It has a chunk out of it about an inch deep. The bathroom is on a 2nd floor. My question is...is there a way we can sand/grind the pvc pipe down (so the top of the pipe is even again) and then install a new flange without having to get into the floor from the 1st or 2nd level? Do they make a special flange that will work? There is a bend not too far down, so I can't go with something that has a real long inside sleeve. Or, if I do go with something with a longer sleeve, will it still work properly if we saw some of it off (so that it will fit just above the bend?) I know hardly anything about sewer plumbing, so please be specific...and please talk in laymans terms. Also, Pictures of what kind of part(s) we could use, would be great. Thanks so much!