I would not trust having a dealer do any welding work on the frame. Believe it or not, welding a precise art and takes a lot of skill. The right rod, wire or filler material must be used and the right amount of heat to make a good weld. Most of the welding done by dealers and such is classified as "mud-dauber" welding.
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot