I finally had a day to go to the club and try the bike out. Mostly rode the loop to get used to the throttle. The accidental throttle blip was just as bad as my 321 GasGas. did go over a few rounded 2' rocks with no trouble.
The small rear tire does not have enough feel and flex for our muddy PA rocks. I ordered the Oset bigger wheel yesterday. $375 plus shipping. I searched online for a 17 x 1.6 rim, but only could find 32 spoke, not 36 spoke. A custom rim would be about $275, $100 for the tire and $50 for the spokes, so the Oset complete wheel is the better deal. Maybe someone will be looking for the smaller someday. At least I will have a spare sprocket and rotor.
I do need to raise the handlebars to save my lower back. Mountain man, how much did you raise yours? I don't have my old bike to compare to.