Try Yuriy at Finezza. He is located 1/2 block from Barney's at 29 E. 61st Street, Fifth Floor. Yuriy has great tailoring pedigree. He was the head tailor at the now-defunct Harrison James menswear shop, and he did a long stint at Sulka, before they closed a few years ago. About 1 1/2 yrs. ago, he ventured out on his own, so his prices are still relatively low. I have used him for about a year and I highly recommend him to forum members. He does bespoke as well as regular alterations. Last time I was there, he mentioned that he was going to Europe to puchase fabrics to begin making shirts.