I had the Dynatech Mission in my signature repainted recently and was equally concerned about damage to the bonded joints. I explained the construction to the guys who did the re-spray and made it clear that any chemical stripping or excessive heat was to be avoided at all costs. They basically sanded the frame down (rather than shot blasting), sprayed it and let it dry naturally. I suspect the frames can handle to be treated a little rougher but it's really not worth taking the risk in my opinion. Hope this helps.
Some pics would be good