Ive had two carts re-tipped. The Lyra came back better and my Koetsu came back just as good. Crazy long wait times but Peter puts lots of care into his work.
I have a Koetsu Rosewood Signature Platinum with the Soundsmith Ruby cantilever and optimized nude line contact tip - it is sublime! Next week I'll have a new Blue Lace Platinum and I might just send it in for the same tip given my experience with the RSP.