IF YOU ARE WATCHING THIS ON A CELL PHONE GO HERE
22:00 I accidentally put the filter in backwards.
This is a video of the process of putting a new cylinder, rings, piston on a 1975 TL125 Trials Honda. It includes installing the timing chain and timing procedure. I bought the cylinder which is a 56.5mm on Ebay for 60 bucks. It came with a piston and properly gapped rings.
If you have any questions please ask.