ahaa bis if you buy something called barcoat and apply an even coat over the top this stops it reacting and only needs a little flat down unlike primer,you can buy it at most motor factors,also your early aircooled will be acrylic and cellulose doesnt go well with it,but the late aircooled to bis will be solid 2k,i think qoute me someone if am wrong....but cellulose will react with most paints anyway.
hope this helps.......
nice to see your black look back... :cool: