th350 won\'t shift Have a prob with the tranny in my 76 blazer. When it's put into gear,(for or rev) it sometimes hesitates and needs a little vroom vroom for it to kick into gear. Also It doesn't like to shift out of first. Since I've been messing with it I've got it to shift once. And after it shifted I let off the gas and then it wouldn't pull at all. I did have to replace the detent cable and changed the modulator but it still didn't make a difference. Has any one had this prob, or know anything other than a rebuild that can fix it? I'm not ready to go there yet cause it is supposed to be a good tranny and I went over my budget on my engine. Any input would be appreciated.