THanks stuart ofr your help, i dont know if this will help out or not but when im not driving and i mess with the button for the rear end, you can hear it work. when im driving i ussually keep it on high, but on the times when i would start out in the low side and would take my foot off the gas and ingage the high end, and put on the gas to go it wouldnt go, it was like free reving. like i had the clutch in. and then once i stoped it would be fine driving in the high end otf the 2 speed rear.