2001 rmk 800 jetting

[JDmotorhead]

A friend of mind installed a attack air box on his rmk 800 and we are wondering what jetting he should go with down in the Valemount area. The box came with 430 and he installed a 390 he thinks which was good for the Fort Mcmurray area. Will this be good for Valemount. Thanks for the help!