Thanks Tom. I did as you said and the piston skirt does extend below it for sure. As far as the ring pins on the piston go they are exposed to 2 small ports if I bring the piston all the way down in the cylinder. That being said I don't think the piston stroke allows them to be exposed on the down stroke but will mock up the top end and take a measurement from the deck to the top centre of the piston then take it off and give it a visual to confirm.
Thanks...I have put alit of time and research into this bike.It is my son's and he is 14. He is excited to get it going. I will post pics when done. Paid 300.00 and will be into it for about 725.00. I've gone over everything from fork seals, carb, brakes plastic, cables, paint and major cleaning..so I hope this works out.
Thanks