I do not have a 2000 mxz 700, but I torque my TRA's at 72-75 ft lbs. I torque, run sled easy for a few seconds, then torque again.
I have seen primary clutches come off that were not torqued enough and I have seen guys break stuff trying to pull a clutch that was torqued too much.
As far as the secondary clutch goes, I do not have a spec for it but I tighten it until the lock washer flattens out. You want it on there snug but you don't want to over tighten it.
If you are concerned, I would consult your local dealer.
Does anyone have hard numbers that they got from Ski-doo? I would like to know if I am in the ball park.