motolab, thank you very much for the detailed description. I hope that method will get me close enough to enjoy riding the bike again after this little winter refresh. I will be extra careful when testing the throttle at different positions, and of course I would not hold anyone responsible for something I am choosing to try myself.
Thanks again to all the DR350 folks for all your help! This forum is my absolute favorite, too bad I would never have enough time to read through all there is on here, but Google search is my friend.