Couple methods. easy way...
1.Using vaseline on the high spots before. Wipe it off.
2. Spray then steelwool the cap. Sand it off.
If you have a steady hand. Pin stripe it. One shot. Great stuff.
https://www.1shot.com/One-Shot/Products/Topcoats.aspx
Probably a pinstriper or sign guy that can do it to.
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