Ok, having some difficulties with my latest GK project.  I have done GK before and never had any problems, but today seems different.

I KPhos'd first, looked like it does every other time.  I use an automotive type touch up spray gun with my compressor.  I sprayed my first coat of GK (flat black), still everything looks great.  I sit any project that won't fit in my oven on my hot tub cover as it is painful to touch during the peak sun hours.  I have used this sytem before and never had any problems.  I have never thought to test the temperature, I just leave it there for 2 hours and it has always turned out nice.  

Ok, now..  fast forward about 2 hours.  I go to spray on my second coat when it starts to crackle..  While it might have looked cool on some projects, not this one.  It looks horrible.  I ended up using acetone to remove the crackling and removed the first coat too?  Was it just too hot?  Did the parts not cure from the first coating?  WTF?

I am not an absolute follower of GK but it is the only application I have ever used.  Anyone use Duracoat with good results?  How hard is it to use, mixing the hardener?  

GunKote is a thermoset. It achieves a set at a specified temperature which causes the components in the paint to "melt" together. You could keep it at 175 degrees for a year and it still wouldn't set. The crackling may have been because of the paint components not "gelling" together.
Some did, some didn't.

I've used Duracoat and Norel's moly-resin.  Both work very well.  I like the Duracoat for projects with parts that won't fit in the kitchen oven (or if my wife is home.  Duracoat requires no pre-heating or baking, and mixing the hardner is very easy to do.  I've used the Norel's on some pistol projects and to refinish a Romanian WASR.  Looks great.

Now, I read some other opinion on this site regarding KG Kote.  Most of it's fans claim it to be more durable and scatch resistant.  I have no personal experience, just what I've heard.