Mouthsticks offset on thumbpads for 2 spacing choices, by rotating thumpads on gimble joint sticks. In this inverted configuration (gamepad), 'Xpadder' software will compensate, this is for better line of sight for user. Attach '3M' dual lock 'velcro' pads (radio shack), to outside back of box left & right (for attaching to support arm). [Approx cost for box & mouthsticks $12 USD] Suggested tools: drill bits, small wire strippers, small side cutters, small needle nose pliers, Xacto knife,dremel tool. Download and program 'Xpadder.com' software,(or USBoverdrive). Possible source for tubing: eBay (search: latex tubing 1/16") [1/16" ID x 1/32" wall = 1/8" OD] The small diameter & flexable tubing will not affect mouthstick movements. Again,... see other album here, for support arm information. [MouseOnAStickInfo@gmail.com] (desktop picture by Geoff Hunt) NOTE: I am not a fan of 'FaceBook', so leaving a note by that method can not be replied, by me. Check tubing, occasionally, for moisture build up, and clean tubing and mouthpieces as needed.