Some of the 4 speeds had a thumb/finger lever operated rod that ran down beside the shift lever into the transmission to operate a sliding sleeve on the base of the shift lever that blocked accidental access to reverse. If the rebuilder (or anyone else) left out the rod and lever but included the sleeve you would have a problem like the one described but not see an obvious solution. I'm not sure what other possible causes exist as well.
Last edited by Grant_Bowker; 06/11/2014 4:59 PM.
