Welcome, there are many of us here from the KLR Forum. another thing you are going to love about the S10 is the shaft drive.....hard to go back to a chain!
The mode switch requires the throttle to be completely closed for it to operate....if you effected the throttle stop position/idle speed when doing the throttle bodies that could be your problem.
Sign me up for 2016....I'm headed to the Zion Ponderosa for the Flying Monkey Adventure Rally in October of this year! I've been there several times and its a great location. plenty of dirt and street options from there.
I'm in, love that area...I'm also headed there Oct 1st-4th for the Flying Monkey Adventure Rally based out of the Zion Ponderosa. I also want to do the Burr Trail area, Moki Dugway, Valley of the Gods.
Mark
Hang in there E4R, Just chalk it up to a tough day.....you will be looking back and laughing about it soon enough. Even us old bastards get to live and learn along the way. I hope to hear from you posting about a great ride day in the near future!
All the best
Mark