I'm thinking about doing the same for the same reason though I seem to be adapting well enough. I thought somebody said you adjust the gearshift lever level from the starboard side somewhere. That's on my Check It Out list.
Ok good to hear, let me know how you manage to do it. I think all you have to do is loosen both rod end nuts and turn the shaft to the desired shifter lever position. Wait till you see where the upper nut is.
I thought I heard also from the right side , but probably when the bike is on the side stand. I was on the center stand when I tried and gave up after finishing another job.