I don't mean to Scobel you with obvious advice, but it sounds like your suspension and or tyres aint set up right or are inadequate if BPW is killing you.
Hardtail with ~120mm at the front. I could get down the trails fine from a technical point of view, but there are no smooth sections and the constant vibration takes its toll. My mate on his Orange Five fared no better.
Uplift is nice and all, but it was the constant pummeling from hard, rocky tracks that broke me.