Phil,

I believe that you are spot-on. My garage is not very warm and the nights were cooling down when I painted the firewall. I'm sure now, that my problem was caused (as you suggested) by not waiting long enough. Patience is something I need to work on!

Thanks!

Nick
1940 KC Model 1/2 Ton Pickup Project
(with '37-'39 Bed and what we think is a '42-'46 Frame)
Taos, New Mexico