Rear wheel tracking question. NOOB.
I was in the middle of making some adjustments on my chain and I started to wonder how I can tell if what I'm doing is correct. I know how to take the slop out but how am I going to know if when I'm done that the wheel it going to be tracking perfactly straight with the front wheel. It has the silly hash marks on one side of the swing arm which don't help if their not on the other side as well. If I go off the swing arm to the lip on the rim it's off, a lot 1/4. I just took this bike over so what I'm really doing is looking everything over real good. Also how much slop should be in this used chain?