Coquihalla Jetting Help Needed

[97MXZ670]

I have a 97 670 (136" Track, 2" lug with a D@R). No HAC. Was previously jetted @ 210 -190 (10,000 ft) before a burndown on the Mag side while at Pemby ice fields. Rebuilt and is currently back to stock with 300 - 290 jetting for Sea level.

Wondering if anyone with a similar setup could tell me what they are running for jetting at Henning and 10K. I have read the manual and know what it say's, but you know I always feel that an actual tried and tested setup is the best info anyone can get.
I'd like to have a proper setup before I unload and have to start playing with jets right away.

Any help is much appreciated. See ya on the hill....

 

[S2S_sledder]

Honestly, you'd be way safer to buy some brass and spend a day tuning in the field then to take some one's advice on a setup that worked for them.... Jetting will be different for every motor especially if you're running aftermarket parts of any kind, head mods, porting etc. Head up there with the stock jetting you've got now and throw in fresh plugs at the start of your ride and then check em throughout the day. If its running fat then lean it out 1 or 2 sizes at a time. This way you can find the sweet spot for your particular sled, rather than relying on someones hearsay or memory from several years ago... Good luck, the 670 was a power house in its day.