The belt needs to be wider (or use the older 166 belt that has orange verbage vs the new one that is white), doo has a new wider belt out now......swap your blow 166 belts for them
DJ has a very steep helix that will up/down shift with wickedness......i have a 44/33 that is much better than stock (42 straight)
The primary spring needs to be a bit shofter, load up the pins with 19-22 grams........i ride at 10K, so thats what i need
Go cheap and gear down to a 19 top gear and shorter chain, Doo had a SB on this and will do it no charge
Besides that, the Damn secondary is fixed, this is BS, guys who have had several revs (me) all know the alignment is the real reason these Revs eat belts......the race manual has the XYZ numbers, or you can find them on Dootalk in the Mtn XP forum