That may be the culprit... I am going back over there this afternoon to crawl under and have a look-see. I figure I will disconnect the shift linkage and see if i can get it out of gear with the levers underneath, for starters.
Good place to start (linkages) in addition to the shifter. I had a similar situation where i had put a shifter rod on wrong and it would only go in or out of one gear. Maybe one of the rods on yous came off.
