Recommendation for contax zeiss C/Y lens CLA

Hi, i have a contax Zeiss Planar 85mm 1.4 that has a stiff focusing ring, I'm based in NYC but willing to ship for better prices.

Any recommendation for a good CLA specialist to relubricate the lens?

best,

I don't live in America, but there must be many competent camera repairers in New York.