Hi, just completing our bathroom reno where we installed a 3-piece acrylic bath (tub/shower combo) with surround. I was going to fix a straight tension twist shower rod (as I can't drill holes in the surround), but I'm having a hard time getting the rod to stay in place. I don't know if it's just me and I'm not doing it properly, or whether this is common with acrylic baths. If so, is there another solution? Thanks so much!