Yeah, I've pretty much maxed out my castor adjustment. I might be able to eek out another 1/2* but that would be a bit sketchy and I dont want to break the tension rods. Plus it would make my current situation worse.

I'm rubbing on the outside edge of the tub on the driver side as well. I guesstimated when I made them and I'm off about an 1/4", so I might cut out the lower section and re-do the lower outside corner.

A/C dye stuff is like 5$ at advance.