Larry Its the coat between paint and epoxy .. some guys (me) spray the plug with Helmans spar urethane then if you want to wire or whatever you won't damage your paint..PLUSS you take a plastic 00 scuff pad and lightly scratch or scuff it for better epoxy bond .. If you spray the helmans to heavy like I always do ,you get a yellow tint to all your colors ,, others are using Krylon for scratch or scuff coat ,,but half of us are using systems 3 the other half envirotex and the other half other products ..,,thats where it gets confusing whats working or not .. we're talking apples and oranges..
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