If you are using Model #1 of the Motion Synth Grip (iPhone 4s, 5, 5s, 5c, SE, and iPod touch), then follow the video instructions below.
If you are using Model #2 of the Motion Synth Grip (iPhone 6, 6s, and 7), the rubber spacers are not required, and you can skip directly to inserting your iPhone into the Motion Synth Grip.
If device is not being held tightly enough by your Motion Synth Grip don't worry: Part of the Grip's lightweight aluminium design is that it is intended to undergo fine adjustments to give a more precise fit depending on the device.
You may find that some other fine adjustments are also necessary to get the rotating parts to rest perfectly in place. We will soon be providing instructions in this wiki on how to make these fine adjustments.