So I want to talk a bit about what I think went wrong on this paintjob, while I can't say 100% for sure my best guess is that even though I used lacquer paint over lacquer primer , lacquer never really fully cures or it does so very slowly, it also shrinks quite a lot when it cures , lacquer is really thin and contains a lot of solvents that have to evaporate out of the paint. over time.
What may have happened here is that the lacquer primer was sprayed too wet or too heavy, then when the paint was applied over it and it got hot here baking in the sun the solvents in the primer below it tried to evaporate out of it, which of course the fresh paint somewhat sealed off , this caused bubbles in the paint where it tried to evap out.
I have painted a lot of stuff over lacquer primer both spray can primer and paint supplier type primers with no issues but there is always a first time for everything and apparently this was it.
So how do you prevent that, by spraying the primer in light dry coats and not letting it wet out giving it plenty of flash time between coats or by using a different and in fact much better product like the Dynacote -Sikkens 2k primer I am using on it now , I also still think that black epoxy primer would have been the best option as a base for that particular paint since it also seals the topcoat from anything below it.
You win some , you lose some and some get rained out, at least I am posting what happens either good or bad and hopefully someone can learn something from it .
