The tc3 has always been asymetrical in this area (and in general, TBH), and that is independent from the servo travel or linkage in itself. The C hubs are not molded symmetrically, SO, if remember weel you have to grind the left one where the knuckle hits it, in order to have equal steering throw ( that is, until the racks hits its pair of bearings/bushings like the right one). Your steering links must be absolutely equal before you do that, of course.
Once this is done you adjust the lenght of you servo link as per the manual and set you EPA's meticulously.
Done !