I don't know what works with dip. If the coating is cooler before spraying, my logic indicates that yes you'll have a wee bit less pressure while spraying. However flow time is what you need, and less heat lets it dry slower. Car painters can choose a slower solvent for better flow on warm days, you can only vary the temp of the liquid and I think heating the cans would have made it worse. Surface temp is the other big player. Slow means flow, when it comes to coatings! Well, that and having enough, lol.