just came back from the local mud pit and i get on the freeway, no overdrive. shifted fine beforehand. so i drive 20 miles in drive til i hit traffic and in stop and go driving the truck didnt want to shift. it would hold 1st too long then slam into 2nd. ive been planning on getting a bowtie overdrive tranny, just wondering if there is something small i can replace in this tranny to keep it going a little longer. its got over 140k so im pretty sure its toast and in need of a rebuild, but you never know.