My truck shifts fine in every gear but when it shifts from 1st to 2nd it takes twice as long to shift and then grabs or clunks. Its a 2001 auto screw 5.4 4x4 and every other gear is ok.... Any idea's?? I just bought it 2 months ago and havent changed the fluid yet and it does have 140k on it. I am hoping that I dont need a total rebuild if its just one shift thats messed up?? Any help would be great! thanks Dave