Does anybody have an idea of actual dry times for Interlux Brightsides primer? The Mfr. says is can be sanded in 16 hours, but after 48, it is still a bit soft in spots. I cleaned the hull with acetone before applying. Will this cause adhesion problems? I'll be applying Brightsides paint, but I want to make sure the primer is ready to accept it. Any insight would be appreciated.