Confirmed chimney stove pipe all fine. ordered new support and plug. There's a Selkirk part number on a band clamp, and it looks like the Selkirk pipe I bought for the furnace at Norman. I really hope that's correct.
Wasted a lot of time and effort trying to make my lil trencher. Design works, and strong enough, but single point hitch and lightweight tractor don't let me get to the 6" minimum depth I'm after. Especially when an 18" trencher rental is $66/4hr. I was hoping to direct bury pex for garden watering, too, and that's not placed yet. So I guess I'll have to change up priorities to get that done in one shot. 3pt hitch for the win.