For those of you with a 1440gt, with stock motor & pulleys, what belts are you running? I used HF link belts for a while, which seemed to work fine, though they stretched over time. Due to the stretching, and concerns about them being intended to only run in one direction, I replaced them with Gates tri-power AX28’s. These run well, but are producing a steady amount of sticky black rubber confetti. I’ve had them for several months, with many hours of use, and the problem remains. The belts aren’t visibly damaged, and the pulleys don’t have any obvious roughness or burrs.