I'm running copper pipes to add a shower onto an existing bathroom. I have a T sharkbite to split water running to sink and also to shower. I need to lower the level of the pipe to run below the subfloor. Do I need to add a 90 angle sharkbite to turn it downward then another to run it parallel to the floor? Or can I gradually lower pipe (sharkbites seem to allow so play) or am asking for trouble by angling the pipe down?