Seems you can vary the look of the SPI quite a bit too. I use a 1.4 and the difference between shooting it straight and shooting it 10%-15% reduced is huge. Shot on the lower temp limit around 64 degrees shop temp it laid down damn near gloss! I had to hit it again to knock it off a bit. Dog - you shooting the SPI and leaving it as a topcoat? Looks good to me.