hey guys. i have a 98 12v short bed 4x4 4. 10 160k 315/75/16's. my question is concerning the transmission or torque converter. its really annoying when im accelerating and i hit an incline and i have to push 2000-2500 rpms just to keep accelerating or maintain the same speed; anything less eventually results in rapid decreases in speed and eventually to a crawl. also, if im parked on a hill i have to rev up to 2000-2500 just to get the truck to move or it will sit there or roll backwards. overdrive is my fastest gear, as soon as it kicks in the revs drop down to 1200 or so and its like all this power is unleashed. it feels like the transmission or torque converter is wasting all the power the engine is making. if something were "tighter" i guess the truck would be so much faster and i would burn alot less fuel. is it just the stock torque converter that needs replacement? do i need a torque converter lock up switch so that ever gear will be locked in? is it something entirely different? i know there are alot of posts on this subject but it seems to have to do with towing most of the time which i dont really do. sorry this is so long! thanks!