Quote:

you can spray enamel paint over lacquer paint without problems. it was done all of the time in the old days.
when you spray lacquer over enamel that's when you have lifting problems.
spraying DP down first is a good idea. it will help keep the enamel from soaking into the lacquer.



This is correct.

Problems occur when you spray those "hot" lacquer solvents over enamel. Not the other way around.