86 Husky 400 XCE fork set up

I have been restoring an 86 400 Enduro.
Rebuilt the forks with new steer head bearings, upper and lower bearings, top out washers , and seals/boots.
The springs are progressive wound. At the top of the spring is a short pc of white plastic pipe. Looks like sch 80 pvc.

My question regards pre load of the spring.
The springs are free and rattle with the fork fully extended.
I havent put the bike on the ground yet, still sorting out the front wheel. How do you measure the fork spring pre load and how much pre load should I start out with?

Next question is, what is the torque value for the triple clamp, and handle bar mount bolts.

Thanks

Bump

No body got any feed back on this subject??????????????

man i dont remember the torque values I just went by feel....tighten..move it and see...loosen...not to loose not too tight...

preload is all in the feel....mine i liked stiff and would use about an inch of preload with it fully extended maybe a little more....its just regular PVC so you can just cut it or make another cheap...just do it and ride some...to stiff cut it off....too soft put a longer one in

Its all "feel" with the head bearings. tighten then back off and turn the forks side to side until desired resistance and feel with no back and forth play in the triples, snug the nut just tight, I have seen them split.

Thanks for the input. I will remove any slack to start and go from there. Does anybody know if progressive springs were OEM. The parts manual looks like standard springs.