Yeah I always just had a feeling about them, I didn't feel they really belong in the game for various reasons but I guess they do, just hard to balance things around.
After purchasing a new nozzle (dropped my 0.4 down the sink), and a H&S screwdriver to replace some seals which I also purchased, I then realised the broken part of my airbrush isn't actually a replaceable seal, and I have to buy a whole new body. Really getting to the be 'Trigger's broom' of airbrushes now. More annoying though is that its another weekend I can't make any progress with my stuff, well that's not technically true but I wanted all my base coats down.
Well, apparently the gap I saw is actually supposed to be there lol, which means the problem I had the other day was unrelated lol.