jschmid is right.

thats what i meant. i can adjust them (just turn a dial) its the getting to them that has me stumped.

tommarow ive got time so i think im gonna cut out a section of those supports to allow me instant access to the adjustment switches...

it would be real cool if there was an electronic mechanism that could switch them for me...be connected up front to a knob or switch of some sort.

thanks for all your replies,
andrew