Hi Rob a little tip you could try to prevent the paint flaking off when trooping ,is to put a couple of coates of Johnson's Klear on it ,i used this on my Gino V3 PP helmet and my 1mm abs TM Set for Stun helmet , the Johnson's is a clear glaze once on it protects any weathering you have done and paint chips , i also put this on 1mm painted TM armour with great results .
You cant get Johnson Klear of the shelf now but good old ebay