Yep, I'm in the U.S. and have used that same 2k clear coat. I've prepped the frames extensively, getting them baby butt smooth before clear coating, but I still get a bit of orange peeling. Maybe I'm going to heavy, instead of the light tack coats mentioned elsewhere?Where are you located...
In the states there is a clear coat with a hardener in the bottom of the spray can. To activate the hardener you turn the can upside down pushing down on a bottom that pierces the can internally.....then shake for a few minutes. There is a 48hr. Window to use entire contents before no longer usable. I have restored a few Bultaco pursang gas tanks ( I'm also into vintage motocross) and have used this. Super user friendly, can also has adjustable spray nozzle for vertical or horizontal spray pattern, and years later finish still looks wet like it was done yesterday....