I'm varnishing my boat. I'm putting it on thin to avoid runs & sags but alas I still do get them. So the problem is this, the majority of the varnish is ready to scuff sand in 12 hours or so but the drips, because they are thicker, are not. If I try to sand them out they just gum up and make a bigger mess. I could just wait until the problem areas dry but I am wondering just how long that is going to take. I have already waited 2 days and they still are somewhat "gummy". I looked at the remainder of the varnish in the jar I used to dip out of and there is barely a skin on the surface after 2 days. BTW, the varnish is fresh, just opened the can. I'm using Z-Spar Captain's Varnish. I have not thinned it or added anything else to it. It has been hot here but also very humid. Could the humidity be affecting the drying time?