So, inquiring minds want to know, if the 'bug' is that great, why hasn't it be re-introduced ? Given the current resurgence in vinyl playback, albeit a niche market, one would think it would ?
Probably because Cecil E. Watts is long deceased, and I have no idea who holds the patents. But he did a lot of research on the shape of the nylon brush tips and the brush itself. This was all based on his extensive research on vinyl discs using electron micro graphs. So someone would have to look up his old papers and these are very difficult to find and actually may be lost. You can't use any old brush tips you feel like.
I have been thinking about that noise issue mentioned. I suppose it is just possible those light turntable platters in junk turntables could cause the problem.
At the time Cecil Watts did his research there were essentially only three brands of turntables enthusiasts used, and that was Garrard, Thorens and Sugden. They all had heavy turntable platters. Two of my turntables are Garrard 301s, and two are by Thorens when they were made in Switzerland before the buyout. I have never heard any noise transmitted by my Dust Bugs ever. I can assure my systems would reveal it if they did.