Very interesting.

New light is great !

Another great video. Can't wait to hear Steve's new engine and see how you put it together.

New light is so much better can see so much more thanks

Dowels was the word ya was looking for

When I disassemble anything I keep parts separate in plastic bags and mark them up...I took a scooter apart last year and thought i was just taking a look and ended up dismantling the whole thing and didn't keep everything bagged and marked. Now it's a challenge to match bolts to places...Hmmm..

hi,kicback,you say the top end is a sr cylinder with a reed,is this one of the scooter restoration ones,that where common about 15 years ago,i would say the jet  gearbox is not suitable,it has quite a big jump between 3rd and 4th,the gp200 box is a good alround box,
i would sell the jet box as they fetch good money on ebay,and get a li 150 box,and go 15 tooth on the front,with the scoot rs or if you went with a bgm clubman you could go 16 on the front sprocket,
if the dowels are loose,you can redrill through the end plate and casing with a oversize drill,then cut some new dowels from the shank of the drill and loctite in place,i have also drilled and tapped through the end plate dowel holes and used a button head bolt as extra security,hope this helps and good luck

Sx200 box is not suitable for that state of tune, run your gp box 18/47