Well I did the clearances last last spring and they were fine, threads round here somewhere. And no it wasn't obvious at all what was wrong with the CCT when out, it's why I refitted it again last year as it seemed to have no play in it as all compared to a pair of curvy ones I got off ebay so I never fitted them. I just got a bit worried about it and felt that the second hand ones I have would be as bad or worse so finally went for the K3 one and it's just such a better design. I was a touch worried I had the Neeja problem of a broken blade or something so wanted to be sure hence the new one but I would have taken a second hand k3 one as it's just obvious if they are working or not compared to the old style. I now have three old ones
By the way YC I still have that knackered old tank in my garage if you want it still.