I have a tub in our bathroom, 1940-1960's that is about 3/4" off center, if I leave it where it sets, I will have to space one side of the tile out into the tub area and the shower head side can remain even with the wall.
I would like to know how these tubs are commonly held in? is it just weight? or the walls built around it?.. I think we may be stuck where it is on account of the tub drain, but if I have the chance to move it, I probably will...
otherwise I will probably build the wall of each end out and try to use some cool edging in that 3/4-1" space.