i have used this paint but only airbrushed it. are you using Acrylic GSI? or laquer? use a retarder if you are going to brush paint it… so it would level out better.
if i may give an opinion, if you are going for a metallic effect don’t use the Buffable GSI metallics… Go for their GSI “Super Metallic Colors” they have the same colors for the buffable ones, plus you can touch the metallic finish afterwards,no need to buff. it’s better,shinier,and Chromier.Hope this helps