I gotcha ..maybe cause it was a nine inch and doesn't produce a lot of power . I currently run a bandit 200xp with Deere 115 HP and that eats everything up to 14 inch while hardly slowing down ..not that I consistently push it for that ..only once on a great while does something jam up feed rollers , usually vines or stringy shit ,but a push and pull of the control bar usually solves the problem whenever this rarely occurs. Even without the extrawide indeed tray this chipper makes most crotches its bitch and the ones it doesn't we cut cause its probably to big to handle quickly anyhow. I have used a nine inch terex brand new with less than 10/hrs that we blew the whole top of the machine right off..disc cover and discharge chute ..along with chipper knives and nuts n bolts .threw the top thirty feet up in air and 16 feet away from machine, just adding that to promote the fact that 9 inch is not a very production size machine for most tree outfits these days .