My girlfriend is gonna buy a 2011 Scion TC 6 speed manual. It has problems where shifting into 3rd gear will cause it to get stuck and wont shift out of it, and 4th gear just doesn't work. We're trying to rule out problems weather it be the whole transmission, a shift fork, the cable linkages, or buying cable link bushings that everyone is talking about. My question is why did someone find the need to make the aftermarket bushings to install on the cable linkage. Any help would be amazing!