This has been going on for a while, but initially my truck, '86 2.8 with the 700r4, started missing the 2-3 shift when I was close to WOT in the morning on the way to work. It was only in the morning though, so I assumed it was temperature related. I kept running it though since I had no idea what to do with it. I've already been fighting vibrations and other issues for awhile. I've changed the torque converter and fluid/filter twice with it, but not a complete flush. The torque converter helped with the shudder but it didnt completely go away, although, it was much smoother on the drive home in the heat. Then the notorious governor gear gave up so I lost everything but 1st and reverse. That was an easy fix and appeared to fix the 2-3 shift, but it came back after 2 weeks of normal commuting. It stayed about the same for a while though up until recently. Now it misses about every shift, even dropping from 4th to pull a hill. Then just the other day while cruising at about 35mph, it kept lagging and then catching. I could be off the gas for a second and then ease into it, barely any power, and then engine revs would climb and the transmission would grab a second later with a jolt. It did this about 7 times in a row just rolling down the street. It's really violent each time it happens unless I catch it ahead and lift before it slams into gear. At this point, all the research I've done said to check the detent cable which I've never played with in the first place. I only disconnected it once to drop the transmission but the shift miss didn't start until a few months later. I'm at a loss at this point. I kind of just want the transmission to blow up so I can replace the whole thing and know the problem is gone instead of driving around waiting for a disaster. I don't know what else to try so any pointers would be great.