Not sure about the refurbishment, but Amity 3 (I believe it is) needs a serious cleaning. The mold stains on the water line (both on the roof canopy and the hull) are very dark. Plus, the floating life jacket just needs to be replaced. It's covered with black mold - certainly not making it look like it just hit the water, moments before you 'round the curve.
We still love the attraction, it's a can't miss on each and every trip. We consider it one of the "original classics" along with Kong and Earthquake. As excited as we are to see Mummy coming, we sure miss Kong.