I just built a house last year and had a bathroom stubbed in. I am now considering putting the bathroom in but I have found that the toilet drain that is coming out of the slab is only nine and half inches from the studs. I believe that it should be twelve and a half inches. Besides ripping up the concrete and moving the drain out three inches what other options are there? Also, if I do move the drain using two elbows, what should I be concerned about?