I added a wireless Xbox controller and mapped it to gSender with no issues. In using it, I have some lag and occasionally the command starts but doesn’t stop. That is, I try to jog left and the carriage keeps traveling left until I can hit the stop . I’m assuming Bluetooth is the issue. Does anyone have experience with a wired controller?
@j_a_wolfe Jim: If you search on “xbox controller”, you will get 42 hits. It’s probable that at least one of them will address your question. 
I have had the same problem with my wired controller. Quit using it.