i agree about the hookin up and havin to re-figure out the sweet spot for manuevering 100%. actually on my first ride out with the p-claw i ended up rollin my sled about 20-30 feet down a tree covered hill that i climbed many time with the challenger. what happened was like you said, the challenger would spin a bit and help keep things under control, with the p-claw i hammered it to shoot up between the trees and it lifted the skis and launched, yup launched me right into one of the trees i was tryin to avoid and knocked me off the sled.
g-force heres a bit of a comparison for ya, my sleds a 153 and my bro rides a 162 chall. when i had a chall. climbing in deep snow he could always pull away from me in the deeper snow and usually get a few feet higher. but now i put the pclaw on in the deeper snow i can now atleast stick side by side with him on the 162 chall.. but on the harder or more setup snow i can kill him in a climb. there was one hill not to long but steep with a few inches of fluff on top of a good hard base and he could only get about 2/3 up it and i could go straight over. not much but its a comparison.