1991 SR600 C'dale Crit 3.0 w/ 105 group - i think the rear derailer might be bent. I recently replaced all the cables and housings and added Sora STIs and I cannot seem to get the rear derailer shifting right no matter what I do. I started to suspect the rear derailer might be bent as when it looks like the guide pulley is directly underneath the sprocket, the chain still clinks and jumps like something is off. When i pull the derailer downward to straighten the pivots it does not make a straight line from the pulley but rather sits at an angle towards the rear wheel.
Is this an indication it is bent and what is the proper way to straighten it, or do I need to buy a new one.