Rick,
Thanks so much for your suggestions. When I get to my daughters house next weekend, the first thing I'll do is look at pedal free play. If it's an issue, I'll do an adjustment. You're right, it's not a permanent fix, but it's below freezing up here and these old bones just don't take to the cold like they used to. Hopefully, it will last till the warmer weather gets here.
The tractor barely moves no matter what RPM. I'll also check and see if a brake(s) might be hanging.
I'm sure I can find a stump or tree somewhere on her property to test for clutch slippage, provided the tractor can make it there.
Why do these issues always raise their ugly heads in the middle of winter??? Although I am somewhat mechanically inclined, the thought of having to split a tractor to get to the clutch is almost beyond my belief system. That's certainly a summer project.
Once again, many thanks for your invaluable input. Have a safe and prosperous New Year.
Acky (Frank)