I have a 2001 xj. I put the 2" lift kit from skyjacker on it. Everything was fine for the first 10K miles. Now when I go between 45-50mph, the whole jeep shakes like crazy. If I speed up past 50 or slow down below 45 it is fine. Can only 2" of lift cause the driveshaft to be at too steep of an angle? I didn't get an alignment afterward, could this have something to do with it? Would a tcase drop slove this? Please let me know. Thanks!