Oh yeah.. I had to use some 1000 grit followed by some 2000 to free and smooth the calcium? deposits around the edges. I did a hybrid of the "hairspray on couplers" trick. I used a tiny amount of hair gel on the metal inlets for that water elbow as well, to help it all slide on there... and being as its got three outlets, its a bit of a b**** to get on there.