Here's the good news... I've had mine on for about a year and 4 months... never a problem. I had a shop install it, which was about $600, and they did a great job.

From what I understand, not only is the noise not a problem (they say many SC's make the noise), but the new kits supposedly don't make any noise due to cartridge bearings being used.

I must say, it was the most expensive mod on my VX... and it makes me the most happy, every single day!!

I wish I had it with me right now. I'm traveling for business, and I will be in Phoenix and Tucson next week. Wish I could show you that it isn't really anything to worry about.