hey. yesterday i finished putting my 7.3 back together after having to pull the motor and the head. tried to fix every leak and anything i could spot wrong with it while it was all out of the truck. one of those leaks was the transfercase. its a borg warner 1356 manual shift that was leeking right down the case halves. no biggee to fix it i thaught. so i split it apart and put some new silicone to fix the leek and put it back together the exact same way i found it. again, so i thaught. dummy me didnt check to see if it would shift before i put it back in the truck. once i got it in and noticed it wouldnt get out of 2 wheele drive, i thaught meaby if i drive it a while it will work its selfe out. it didnt however my transmission was shifting like it was brand new for the first few miles it hadnt shifted that smoothe since i had owned the truck and i was very pleased then after about five miles the truck starts sputtering and running rough and smoking and eventually dies. before it died the mehcanical spedomoter was working it started back up but the speedo wasnt working after that and the transmission was shifting really hard. was able to drive it an hour homw though. i have a few questions. first iis do you think my fuel shut off sylinoid is going bad? im wandering if thats why it died. the second is are the mehcanical speedomoters purely mechanical? cause if they are im wandering if i had sever transfer case failure and chewed up the speedo gear. during this i never heard or felt any kind of grinding or bindage. lastly does my e4od make its electronic shifts based off of my spedomoter and thats why it shifted bad after that? any body have similar problems? on the bright side all my leaks are fixed haha