So I am still riding/tuning my 300xc lt here in the cascades. Some later season snow and awesome weather has me out at least once a week for another month hopefully. I am running the exp 2.o on an 2011 xc 300. I have it modded as well as I know how. Increased compression,porting, fatty exhaust, sx ignition, Dicks taperbore carb with intellijet system. All in all I am very inpressed with the performance of the little smoker. Runs with 450s, sometimes it outpulls them, some times other way around. Definitely quicker in the trees and out of the hole, but may give a little up on big pulls if you don't start in the right gear,speed, throttle position etc. My questions are about the tuning of the core 2.0 rekluse. I am running the stiffer pressure plate springs per recluse, and I have a good handle on the free end play thing. My question is regarding the exp springs. I am thinking I need to go to the high engagement which would be all blue springs in the exp disk. Will this firm up the engagement and let it come up in rpms before engagement like a snowmobile with a stiff initial spring rate in the primary? Doe this work like it sounds? I am on the fence regarding the exp clutch for both dirt and snow. I don't use it like most, I still use my clutch like normal, and very rarely do I feel a positive from all the complexity the clutch offers.