Hey Lake Flyer,
I just boil some water in the kettle, pour it into a old coffee can ( its deep and narrow) and let it sit for a couple of minutes.
I then place the paint can into the coffee can with a weight on top submersing at least half of the spray can in water.
Its hot when it comes out, so I too wear gloves (figured that out by accident) lol
The paint after shaking for a minute or so sprays very clean and wets out really well.
It was a trick from an guy that competed years ago at the scale national level passed on to me.
Try it, it really works.
Dave