"poached" a bit of riding in the old rock outcrop to check out the "final" (for this weather) carb and exhaust setup.
http://youtu.be/ch4eXJzCFTA
Lost a lot of top speed, (upwards of 15 mph--topping out around 32 mph now) but it winds through the gears real quick and pulls good in all of them. I am going to re-gear it by 1/4 to 1/2 a point to get a bit of it back.
Set-up for and tried a 1st gear tire-spin launch in the snow pile, taped it with my regular video camera and discovered what i had feared--a lot of clutch slip and no tire spin. All along, it has been hard to tell just what's going on in that regard. Pretty sure the centrifugal's bell is shot. Though i haven't inspected it lately, i don't think the basket clutch is the issue.