is it the paint that hasnt bonded to the primer, or the primer that hasnt bonded to the mini ?
soul destroying I know, but better you found out now than once all the graphics were on - but just think though how good its going to look once its all done.
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I've done the check-ups on what I need to do with the graphics and I'm going to do a full new set, with different base material and a new type of gloss seal from a company called hexis.
they use a special glue that allows for easier fitment and minimal air traps, and the gloss seal is alleged to be almost indesttructible.
it will look good once its done, but I reckon it might be better to bide your time and get much, much better spray paint done - 2 pack preferablly.