hey guys, new guy here and also new to rangers but LOVIN it so far. I had a question for you tech guys here. 06 ranger FX4 Level II, 45k, auto. Can feel a slight slippage when kinda at cruisin speed not when pulling. is this something normal or do i need a tranny flush or something. Its not real noticable but at cruising speed at any speed,ex hwy or city. I just got out of an 04 4x2 edge reg cab, and didn't notice anything like that. so i was wondering if it was tranny, rearend gearing, or whatever. Thanks!!