I recently ordered a simple push button lanc start/stop trigger from lanparte, and it does not trigger start/stop on the FS. Does anyone know of a simple button I could mount on the handle of my shoulder rig. Id prefer not to use the FS700 grip. Here is the button I tried unsuccesfully: http://www.amazon.com/gp/product/B00Q5YVNHE?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00