Me had the same issue that many others have noticed where one of the triggers didn't work when the controller was plugged into the steering wheel. However, there is an easy workaround - remove the small "bumper" rubber sticker on the bottom of the controller slot, under the trigger that isn't working. Unfortunately, this means that each wheel is really only suitable for a specific joycon afterwards, but to be honest it's not that difficult to keep track of. I considered contacting the manufacturer to let them know about my issue, but since the price was reasonable and the solution was so simple, I thought it was fine.