MTM or some form of custom should solve this. In Boston try Ari Boston on Liberty Square or there is a place whose name I forget that does H. Freeman. They are on the second floor on the South side of either Pearl or Oliver just after Purchase Street. You might also try Hemrajani when they are in town. I just had 2 pair made and just got them back after a series of alterations. It is a long clumsy inconvenient process for tailored garments with Hemrajani, but it is an alternative.