I am having trigger issues a bit. It's fine for me but not for consumers. It has to work every time for every animal ( ie. sly soft footed predators and mad hogs) without having to repair anything. I made a new one today and may set it tomorrow somewhere. Have to work the bugs out and will do it by trying them.
if you haven't already, try tapering the end of the bar that holds the gate up. It may make it easier for your customers to set a lighter trigger. Remember that most all commercially available traps must be adjusted for the target species. So far as I know, there is no one trap/trigger design that will trap everything that could be targeted.