J Gott -- Yep -- I did actually read the maintenance manual, ya know

(the big "L" on the nut was a clue, too...) But speaking of tires, I will soon be in the market for a set of the Goodyear 11.00R20 G177's if you know of any nearby.
Robert -- Yep -- 1/4-inch fittings. worked well enough until I started messing with bigger toys ...
John