What did you do with the stock clip that wrapped around the wheel clutch. (It was made from steel round stock)?if you look at my second pic theres a large nut to the right. that nut is holding the blower housing to the side plates that hold the engine and the drive assembly together you can get a 1 inch wide peace of sheet metal thats the same thickness of the housing that shields the carb and muffler. run it from that bolt to the clutch like i did mine. once you got all that done you tighten the nut down. then if the clutch is still slipping you can bent out that pice of metal that you just cut out thats making contact with the clutch into a hump. o and the year of the snowblower is from the 70's. your 726 looks identical to my 832 just smaller and different tier tread.