I've got a couple of tanks that I'm finishing painting and I'm wondering what you guys use for sealing the paint after its all done. When I used to build 1/35 scale I never really bothered with it as after the model was finished it was very rarely handled, with rc tanks though they are handled a lot for maintenance, repairs or even battery changes, I use mig ammo and vallejo paints mostly which are really nice but I do find they stay rather soft and are easily marked , I also use enamels and oils for washes and weathering , I'm looking for a varnish which won't react with these while giving good durability to the finished paintwork, any suggestions

Cheers, Lee.