IRC Vintage doesnt mix. I could be wrong but I think dave mentioned that to me a while back… but I dont honestly remember. Either way, if you do or not you are still doing the job more than once to get the proper results becasue you need a spray out to make your adjustments.
Thats very true though… buying paint is a crap shoot for sure, we built a relationship with Autobody and Keystone (10+ years). they never would dick us over and get careless but I have gotten colors that were off, but I put my money on its not their fault. Hell I shot the FIAT R6 tank twice to get it right and I had to blend that out too! And that was shot with a damn paint color finder!