hey guys i need help. i have 2 problems. my xj wont go into 4lo, i found part of the linkage bent so i replaced it and it still wont go int 4lo it is just like it is in nuetral. prob #2 during this time i put 2" blocks in the rear witch added to my add-a-leaf. and know when i go in 4wd the yoke seems to be grabing something in the tcase"have a knocking sound". i have apox 4to 4.5 lift in the rear. do i need to lower the tcase or should i look for something else. any advise is helpful. thanks