I got some 1370 with an order of Euro clearcoat. It was weird, I ordered a kit of clear, it was just a liter of clear and a half-liter of hardener, but when it arrived there was five liters of clear and 2 1/2 of hardener. I tried to send it back but customer service said they didn't want to pay shipping and just keep it. It's a lifetime supply of clear for me - I paint bicycles and measure paint mixes by the teaspoon.
Anyway, the 1370 works really well with the clear, i can spray a tacky coat, then thin down a little and the gloss is just, aah glossy! Sweet.
Anyway I decided to switch over to Tamco's sandable epoxy hi-build primer because the PPG KX I was using they don't sell in any sizes under a gallon. I ordered more 1370 so I could thin down the Tamco sandable - haven't used it yet and Tamco doesn't even tell you what to use if you need to thin it down so it will go thru the gun and lay down nice on the work. Painting weather is just about done for the year. Get with me next year and I'll let you know how the 1370 does with the hi-build sandable.