Hi,
I appreciate the help. I had read in the manual that the brake should not engage until the pedal is quite close to the stop, and so I did not want to tighten up on the jam nuts too much - just enough that the wheel became hard to turn compared to what it was. I drove it after making the adjustments and found it to be better but probably could have taken it up some more yet. But I was concerned, as was pointed out to me, about the brakes not engaging until the hydro goes back to neutral. I didn't know if maybe the pads need to be replaced since I have never had to make any sort of brake adjustment in the 33 years I've had the tractor! Guess I'll see how things go next time I mow
Keith