First your heating the head too long or your dipping it too long and leaving too much paint on the head so when you put it in the oven, it drips.
Also I have posted time and temps on here and another site, but I do mine between 390 and 400 degrees for 15 minutes except for Pearl White and it's 325 degrees for 20 minutes. I do add time for my oven to heat up as theses temps are what the lead needs to be at!
Always hang your jigs as when you lay them flat the paint will run off and leave that puddle!
Here is the last time I got a sheet from CSI for their time and temps for curing. Look at the notes!http://www.crappie.com/crappie/jig-tying-lure-making-forum/56350-csi-cure-temps-time/
Also do not use a lighter, use an alcohol burner for clean flame or that is what I use. Some use a heat gun, but I do not like them enough!