Hi Gary,
Mine weighed exactly what yours did, 20.5 lbs. I used the wheels/brakes that Sierra Precision sells along with UP6 brake valve.
Since it's still winter here in the NE, the windchill this morning was 17 degrees, I'm modifing the flaps to the latest design. No big deal except re-monokoting-UGH!
Sure hopes it warms up before July!
BRG,
Jon