I guess to better explain first the eye......I did a lot 4-wheeler racing and riding as a kid. We had a place above where I lived in the mountains to where we would jump a ride just for fun on leisure time. My memory is a little vague of that time (I was 11) but my mother played the piano and organ at the church and also played for weddings, funerals, etc. An 18 year old who sang at the local high school had a recital or something that she was going to play for came to the house one Sunday so they could practice. After they were done he seen me and all the neighborhood guys who were much older than me out riding and he asked if he could go along. I had said yes and one of the few memories I have about that day was my father telling me not to let him drive that I was the only one to be driving my 4-wheeler. Well at some point I must have let him drive and somehow we went over a 75foot dropoff on the side of the mountain. Well (no memory) I must have landed at the bottom and the 4-wheeler landed on my face crushing my right side and forcing my jaw thru the back of my skull. It left my blind in my right eye and deaf in my right ear. I was in a coma for 6 weeks and after years and years of surgeries I look normal just no nerve movement on that side of my head. I still deal with daily pains but lucky to be alive is how I see it. I have 3 plates and 6 pins and screws holding my head back together. Now to the arm......I have 2 arms....I just can't move the right one. My father was going thru a divorce in 2009. We were moving things around and some things down to my place....I was in the closet and at the top he had a military issued .22 Ruger rifle. As I was taking it down it went off and the bullet went thru the right side of my chest and lodged into the back of my shoulder. I went thru a couple surgeries to remove what fragments that they could. It severed a bunch of nerves on it's way thru. I have no feeling on the outside of my arm and but I do have some feeling on the inside of my arm but very tingly and hurts like hell to the touch. I cannot raise it above my waist. If I have my hand pointed down I cannot make a fist but if I have my palm facing upwards I can close my fingers into a fist. To answer your question about shifting.....if I'm sitting in my rig and have my arm testing on my leg with my palm upwards I can close my hand enough to click the paddle to shift up. Temperature also defies whether or not I can move it as well. Warm temperatures help with the movement and the tingliness I feel. Colder temperatures hurt all of that. During colder weather I can't move it at all, almost all feeling goes away. I do drive soley with my left hand and as far as remapping goes a lot of the stuff I have mapped is either on the left side or the R3 and L3 buttons on the bottom right of the T500. I can hold the wheel with my knee on straights if I have to in order to set pit stops etc. I did not go into complete details on the original post as it would have been as long as this post. Same for a real life vehicle and putting it into drive or reverse or whatever.... As long as my palm is facing upwards I can make a fist enough to pull the shifter down or push it up. Like I said before....people have things a lot worse than I do and my wife and kids do a lot to help me with a lot of things but I am one stubborn SOB and like to do things myself.