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

Fluid film is no good, this is the real deal

Extreme Moisture-Wicking Action Long-Lasting Lubrication Safe, Lanolin-Based Formula Use on All Metal Surfaces, Equipment & Moving Parts

B'laster 16-SS Surface Shield Aerosol, 12 oz

B'laster Surface Shield Complete Corrosion Protection for Long Lasting Automotive Undercoating Applications, 12 oz Aerosol, Pack of 6 : Automotive

Fluid Film Kit - Includes Fluid Film 11.75 ounce Spray Bottles-3-pack with Spray Can Extension Wand and Bonus Number 1 in Service Wallet Size Tissue

Fluid Film 12 Oz Undercoating Protection Aerosol Spray Can Black 3 Pack, Rust Inhibitor and Prevention, Anti Corrosion Multi Purpose Penetrant and

SmartShield RTU Antimicrobial Surface Protectant, 22 fl.oz

Rust proofing using NEW PB Blaster Surface Shield & T9 -- DIY & Result Photos Bronco6G - 2021+ Ford Bronco & Bronco Raptor Forum, News, Blog & Owners Community

STICKY - How-to Index Jeep Wrangler TJ Forum

How to Undercoat a Truck using Surface Shield

Blaster 12 oz. Long-Lasting Surface Shield Rust and Corrosion Protectant, Lubricant Spray 16-SS - The Home Depot