I have a 110 soil pipe that connected onto my toilet with the use of a straight pan connect and then goes into a branch/tee on the outside wall, moving the toilet a metre to the left would I need to fit a double socket elbow to the existing pipe or do I need to remove that bit of pipe and fit a single socket elbow, I assume that it’s good practice to have the waste flow through pipes/fittings or hat are inside the next pipe/fitting if that makes sense. Would a single socket elbow be long enough to connect to the tee outside or would I need to fit a socket bit of pipe into the tee and then the single socket elbow into this