Dang shift rod or something...
 

Okay well as you can see, I have a mazda protegé5. Now for the problem. Last summer, I realized that my shift knob really vibrates. So, I decided to change my bushings and while I was at it, I installed a performance short shifter thinking that just maybe it could be the whole thing that was bent or something. Finaly, it wasn't that and now i'm really pissed seen as that all cost me like 300$ (installation and parts).

Now, I just don't know what it could be?! Could it be my shift rod that isn't tight enough or is it my transmission that is ****ed? Have you guys ever had that problem? When i'm in gear and accelerating, the shifter kicks a little.