Well, the more I thought about trying to get my two Dynavector Karat D3 cartridges rebuilt the more I shied away from that prospect. I think I'd be better off trading them in at some point. Got a as new Shelter 501 MkII coming in that I'll install on my Rock 7 to get it up and running again. It's sonic qualities seem to be more in line with my Sussurro and will be a nice cart to have around. Easy for SS to rebuild when the time comes.