Full review: "Hello Gus. I wanted to follow up with you about the pulley. Yes, the silicone sealant did the trick. I also acquired the recommended grade of oil for the bearing sleeve. I must say that of all the upgrades I have done, three stand out: adding (another) counter weight - outstanding tracking; adding a one-piece sub-platter, and now a Tango Spinner sleeve bearing. While the sonic benefits of your opal belts and triple pulley are not to be ignored, the difference the sleeve bearing makes is remarkable. It was more than the quiet...music sounded more coherent. When I did testing, I found that the speed variance was reduced not only in the degree of any variance but in overall variance as well, especially when the recommended grade of oil was used. I cannot stress the difference this has made. Everything sounds a little sweeter all the time; the sound stage I have was already very good but this is another level. My RP6 now sounds better than any other TT I have heard so far. Thanks. 
The attached file was also very helpful for a number of other questions and just useful info. Thanks again.
Please keep doing what you are doing, because it is really good. I would recommend your upgrades to anyone with a Rega, regardless of what model they have."