Rebuilding a 1963/64 Nut and Bolt Mamod Te1

Just a video of me rebuilding a 1963/64 Mamod TE1 Nut & Bolt this engine is over 50 years old hope you enjoy the video :)
To tell a real N&B Mamod if you dont know already they had:
1. embossed "mamod" on the crank
2. Nut and Bolt Construction with copper flat head rivets on the
crank assembly
3. Solid Axle with a big domed rivet and a front hole for steering
4. no hole though the chimney as they had front axle steering