Installed on a 72 shovel, the ring gear was hitting the belt, only in one place. Pulled it off and the ring gear had not been seated. Contacted BDL, they wouldn't believe me, had to take pictures and send to them. Finally a week later I emailed them, they said send it back and they would fix it. I had already purchased another one, it was the same way. Sent it back for a refund and had the other pressed down flush by local shop. Things went smooth after I had to pay for their screw up. My belt has a place in it where it is coming apart. No warranty on the belt.