Great build. I would love to see a video on the complete operation of that when it is all done, looks complicated lol, but very professional. My buddy and I have been grooming the local ski trails around here for over 15 years now. Our DIY equipment is no where as fancy as yours, but it works. I built all of it myself, roller, drag and track setter. We dont use the roller anymore for the big snow falls, we just drive around with our sleds first to pack it like you mentioned in one of your previuos posts. I built everything light so it could be pulled with a standard snowmobile but now we use a quad with tracks. Just last year we mounted the track setter to the drag so we can do one pass grooming which saves a ton of time. We just rely on the weight of the track setter to cut the tracks but i really like the idea of using jack to add pressure to a lighter smaller track setter. Our drag is extremley simple and is just built out of 3/6 x 2 angle and doesn't have a pan on the back to pack or corrigate the the final result but I would love to add that. I wll be following this to see the final result.