Thanks for the tips guys... The model store in town didn't have any 'decal setting' solution... But I did put a 'future' clearcoat on the areas where I was applying the decals before hand. Hadn't noticed any silvering in the decals, but they're drying while I'm at work.
So once I'm satisfied with the decals, then do a clearcoat of my entire model before I do my wash, correct?
(Sorry, but this is my first model. I feel like I'm being babied through the entire process. BUT, I promise to spread the joy of modelling and help out newbs when I'm a grisled ole veteran!)