I got a used 2305 a while back which I was just using to plow snow with a rear blade but now I just put the deck back on but can't get the deck to raise or lower. It uses the same hydraulic control as the 3pt, right? Is there some kind of diverter or something I need to engage so it raises and lowers the deck instead of the 3pt? I've fiddled with the cut height adjustment knob and turned it all the way in both directions and it didn't have any discernable effect - though I have no idea if that is working or not. I only got one line connected to the four hydraulic ports (no loader on this tractor).