I want to extend the height of the discharge chute of the used leaf loader I'm buying. It's an older (maybe 4-5 years) Landscape Supply unit. The chute is round. But thier newer models are square. So does anyone have any idea how I can extend the height? I see that Billy Goat makes a round extension for thiers, but even if it did fit, I'm sure it's way overpriced (I've seen other extensions for $175 !!). I could probably find some type of metal stove pipe, but I can't figure how I'd attache it. The current chute comes apart right above the impeller housing, and there is a collar on each piece where it connects. I can't see how I'd fit something to those collars. Make any sense?