2 things I've found to cause adhesion problems is body oils from my hands on plugs and not sanding my primer coat before I put any top colors on it. I wear tight fitting nytril gloves to help my dexterity in handling the plugs this keeps body oils like from rubbing sweaty eyebrows or itching my hair line off the plugs. These cause more problems than you thing with adhesion. as fine a spray as createx an other air gun paints are well it doesn't take a lot to upset the mix so to speak. Tight lines an hope this helps. Ron
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