I got the spray gun out. And I did walk away for a while because I washed the body down with water to remove the sanding residue so had to let it dry off fully after wiping it down. But the body was resting in the sun before it got sprayed and I started to get a few small bubbles appear in the paint before I sprayed. After a couple of weeks of really overcast days with mid-winter levels of light, the sun came out and it was at leat 32°C in the shade in the back garden. I pressed the bubbles down and sprayed 3 more coats on the back (the front was fine). So it's back hanging up in the garage.