ok i have a 74 chevy blazer was full time 4wd-350-350tranny-203 t-case. My question is, did this ever have "2hi" on the t-case or is it only 4-lo,N,4hi? The shifter seems to stop at what would be 2-hi but if you put it in drive it acts like if it was in neutral. What is the deal? Do I have a big problem or is this the way it is??