So I have a 2003 Cub Cadet 1525, which has been ultimately the most trouble free device I've owned. Recently, it just shut off while cutting grass with some leaves on it. I took the deck off and the blades and pulleys spin (shouldn't be able to stall 15hp). I took the clutch off and it seems to be loose so I tightened the three nuts until there was a little drag. Before I put the belt back on...is there something I am missing? The clutch is tight now and engages the pulley and the deck pulleys spin free. It would literally just start smoking the belt before and I just couldn't figure this out.