Nate at Klass Kote will tell you straight up KK clear will yellow from the get go and only deteriorates from there. Nothing I've seen is as "crystal clear" as the better - more expensive - versions PPG paints. The low grade Ommi PPG is way more clear than KK, in my opinion.

I encourage anybody with the desire to learn how to paint, to try KK. If your unsure of your abilities, try something easy, like control surfaces or a whole fuselage. Monokote/Ultracote colors are available.

I have no interest in KK, I'm just a big time fan of their product.