My fingers are just too dang fat to operate the switchs on my Ulti Multi Cart. Using a pen to select them didn't work too well for me either.
So, I elected to hack what you see in the images. Please note - the original cart case and the cart itself were not compromised - I tack soldered the wires needed to the underside of the cart at the pins of the dipswitch. So if I wanted to go back to "stock" it would be no problem.
I used a dead Artillery Duel cart and a small project box, 8 small switches and some bits of wire.
switch up is on, down is off.
Please excuse the blurry pix, I ain't much of a photographer.