I have a Leica iiic that needs a new shutter curtain and new beam splitter and was considering using him. Another repairman I found on eBay by the name Mr. Fuchs who claims he was a Leica repair shop supervisor for 50 years says he can CLA and do shutter curtain and beam splitter replacements on all LTM Leicas only. His prices are very friendly to my wallet, but I haven't seen his name thrown around in forums much so I don't know about the quality of his work. Anyways, I'm glad you had a great experience with Mr. Ye and will consider him for my current repair needs.