They are all original pulleys Bruce, i know this because they are the same as the ones on my 38" deck. That's what i swapped them over from. bit of a mystery really. I DID raise the front of the deck, just wondering if that may have caused it. On the subject, i am thinking of cutting the old 38" deck to make it "higher above the grass" if you know what i mean, and, if need be, different blade spindle housings to lift the blades up higher. the reason for this is: 1. the old mower is sitting there idol with a stuffed motor, 2. i need more height to cut very high grass when i get the jobs for that. will cutting the deck not work? i guess it will alter the airflow. i am basically trying to turn it into a slasher of sorts. Any suggestions apart from go buy some thing else?