Thanks guys!
It was Meng brand paint Piers. First time I've used it. It's an acrylic which I really prefer. I'd been using a set of Gunze Sangyo laquer based paints designed for Japanese armour but I'm find it a PITA to use. So I was happy to switch to the Meng acrylic.
I sprayed in the basement/cellar as I usually do- 24C and with a fan running to circulate the air. It could have been a little warmer but that's the normal tempature and other paint dries just fine.
Going on holiday myself next week and then going to be trying to finish up stuff for the end of the year. Will be back to work on the Type 89 first of the year next year. Am going to try to start fewer
GBs and get more stuff finished!!!