I just recently tuned/overhauled my duke with u-turn, and now whenever I increase travel after a few minutes of riding (xc, fairly flat, a couple short drops) the u turn has crept all the way back down to minimum travel!
I wiped down the u-turn spring with a dry rag and applied Judy Butter to the entire spring. I also replaced the dust seals and foam rings. Anyone have ideas as to what might be going on?