I've got ten 8410's in my warehouse, and they all perform differently in terms of acceleration and neutral breaking, despite them all being used for the same task. It seems I can acess the programming menu by holding down the horn while powering on, but from there, I don't know what I'm doing, our how to confirm any changes I make.

Can anyone let me know how to make setting changes, or maybe direct me to a user manual, provided that would have the info I need?