How to float an out of plumb tub wall
I'm tiling my tub wall and the faucet wall is out of plumb and so the tiles may not meet properly and look terrible. I have cement board on top of greenboard and don't want to tear it all down to plumb and line the wall. My solution is to float the wall.
I'm moderately skilled but no professional by any means. I have been given all sorts of advice. Not sure which to take so I have tried to float it with light Joint compound and it is now closer to an 1/8th inch away from plumb and looks much better. I used that because a tile guy told me to do so as he said "tile doesn't care what it sticks to". Before I continue to tile I need some professional advice to guide me.
1- Should I sand the last coat smooth and primer with bulls eye 123 and commence to tiling.
2- re-float it with morter, if so what kind exactly.
3- Is there a better option I haven't considered. I DO NOT want to tear it all out and plumb it properly. Thank you in advance.