"Any other advice." Yes. Ask them if they have ever done this before. Ask them if they are familiar with thin wall tubular brazed structures. The Paramount Room at Cortland and Kostner used to get this one wrong and not just once. A local shop that mostly works on motorcycles and cars is very likely to get it wrong.

Still using Franklin Frame? Ask Jack Trumbull for advice. Ask him if he can take this part of the project. If he is reluctant or if he is very high priced there is a good reason for that.