[Highland Park] Box gutters

Has anyone found someone that can repair box gutters? Most roofers say they can but it is a lost art so I am looking for someone with experience. I have already done the usual sealant, webbing, rubber lining and painting without success. In addition I am looking to repair the soffit damaged by the leaking gutters. It is the original wood tongue and groove and am not interested in putting aluminum as seems to be the current solution. Thanks, David