All great advice mentioned. I use the 2-ton in the syringe type applicator. I've notice when I get close to empty on the syringe I have more issues. I'm not sure as the end gets more buggered up the exposure to air creates a problem and particles of dust collect on the [tip] cap. I've also noticed if I brush too hard while applying the epoxy it will make it thin enough in certain spots to separate while on the wheel. Sometimes the smallest little paint web or bristle will create a pothole in the finish. But generally when I have a problem I didn't mix it well enough.