Hi Karl,In the build guide for your servo start switch using MG90S, it mentions to buy the D Shaft 1P8T rotary switch. Would it be possible to use a normal 1P8T rotary switch instead, like so:http://www.timetravelaudio.co.uk/shop/components/switches/rotary-switch/1p8t-rotary-switch-1-pole-8-throw-mini-rotary-switch-16mm-body/ Thanks,Jonathan.