Matt, sorry it took me so long to get you that original manual. Just glad to share it with everybody. I think it nay still be the only 1 on the web.
As for your DR kit on the Gyro. Depends on the height of the jug, if the ports line up at TDC/BDC. The DR kit may work with a spacer or cutting down the cylinder. Install the kit on the hobbit, take some measurements and then install on the gyro to take the same measurements & see if the ports are opened and closed as needed. Do some research and let us know what you find.
I noticed the FA50 has a stroke that is identical but kits are very rare for those also.