To add to Skuzzy's imfo,the wheels are analog controls,look for them in that section. The I button,is a clutch button to shift functions and only works with the SST program. You may find the roller/push button on throttle doesnt work either,some report leaving the control panel active in task bar allows it to be programed but I never got mine to function.
If you map trim controls to the wheels,being analog they wont override combat trim so you must toggle off combat trim to allow the wheels to function!
Also you can use the SST to do many things but I found that I seldom used it and took advantage of AH's modes instead,you can map a whole new set of comands in mode 3 and/or 4 and simply toggle between modes.example,I had mode 3 setup for easy dual engine control for flying twins and had mode 4 setup to make flying bombers easier for me!
If you have any questions/problems feel free to look me up in the training arena,I'm there most nights or you can PM me if thats easier for you.
hope this helps,and Roy wasnt trying to step on your toes!!!