Your F-86 does look good - how well did the colours cover? (Klass Kote is well expensive over here, so good covering is essential to me!) Are some colours better at covering than others - how about the white? How good is the primer? Does it sand as well as Klass Kote's advertising claim?
Yes, some are better than others!
I used the white primer, it covers and fills extremely well and after about 6 hours of cure in summer temps it sands easily dry with 220 wet / dry paper for the heavy removal then 360 or 400 to finish up. The primer does have it's own hardener so you need primer + primer hardener, various colors + a quantity of the standard hardener. Plus thinners of course.
Bear in mind my job was over a white base. The white covers very well, even on spots where the primer had been sanded through it covers well. Aluminum covers very well, it needs quite a bit more thinner than some other colors as it was almost like pancake batter coming out of the can. Red is in between - I actually brushed the red on the Sabre. It can out looking great and covered in one coat, but that was over a white base. I think if the base is not solid white red might be a bit of a problem. That blue I used is terrible! I've got 3 coats on it and it is still a bit translucent.
One thing to watch for - the primer needs to cure at least 12 hours before applying the color coats. It can give a slight interaction if you don't wait long enough.