OK so the T-grip on my shifter cracked so I bought a replacement which came with a long metal bar. I thought it was an easy fix, just unscrew the shifter knob and remove old piece and insert new assembly (T-neck & rod). Now I have a problem, I cannot engage 3rd or 4th gears !!!! Also, initially I could not get reverse in either until I "fiddled" with it a while. Any thoughts?