Any oppinions on the Shimano Deore derailer. I'm new to the mountain biking... I've been on 20" bmx and flatland for years and this shifting is new to me. I'm havin problems upshifting, just seems like it goes into into the next higher gear rough... kinda like it's skipping some teeth or somethin. I dont use clip ons and everytime this happens my foot slips off and i get my WTB right in the back of my leg! I love my bike (09 Giant Yukon) what would be a good upgrade or does this Deore just need adjusting? Any help would be greatly appreciated.