Well decided just for the fun of it I decided to throw in the GR/GR skidoo secondary spring and test it. Well went out to the field and out of 6 hard acceleration tests it only fell to 8300 rpms twice after initial spin and the other 4 times it fell to 8400. This was on pretty hard snow so it was a good test. So in theory if I have traction this should out accelerate the PL/PL spring in the first 100 or so ft. It definately pulled harder down low. I will be running this spring on my next trip in a little over a week. Thanks Kurt.