Surface Shield - how to prevent leakage when using spray wand

I recently used Surface Shield to coat the inside of my repaired TJ frame (Safe T Caps). I used the aerosol spray cans. I had read a lot of posts about severe leakage occurring at the cap when using a spray wand (read the same issue happening with Fluid Film cans). Sure enough, the first can

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Surface Shield - how to prevent leakage when using spray wand

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