Before I go in an mess something up, is it possible to change the direction of rotation for a diverter knob for a shower. We have something similar to this, but the bar and wand are on the right side of the shower head, and I am probably being OCD on this, but it really annoys me to turn the knob to the left when the wand is on the right. I am not really prepared to move anything, but if there was something that could be flipped around with the valve or something that would be ideal.