I just looked at the unmolested setup on the trike out by the barn. Are you talking about the bolt that goes stright down from the top? The one out there is tightend all the way up. If you need me to, I will take it out and measure the length.
Gotta keep critical parts seperate. I find I never use enough parts containers when taking apart
ATCnut
82 185s - sold
83 200x (hopped up)
84 200x (stock)
84 70 (lost this one to the DMV)
85 70 (soon to have lights, a foot brake, and CDI ignition)
84 200es (parts trike) - sold
85 350X (the best)
85 350X (siezed motor, dream of a poweroll kit someday)
85 250sx (frame was trash, got parted out)
86 250sx (the tractor)
86 250sx (a nicer tractor)
86 250sx (an even nicer tractor)
87 200x (parts trike, its really rough, a dog was chewing on it for a while)
87 250es Big Red (the tank!!)