im having loads of problems with vma metallics and dont know where im going wrong. i cant get it to come out smooth. when i spay it it seems to come out really flakey and like glitter. im not gettinr the smooth coats others get. ive tried raising and lowering the pressure, different nozzels ( im using harder steenbeck infinity and eveloution. have tried 0.15, 0.2 and 0.4) ive used it from the bottle and thinned but i cant get smooth results. can anyone help?