I removed the rear wheel to install a new tire and slapped everything back on. Now the tension for thr brake pedal is so loose that i can push it down with 1 finger. I kept the rear arm angle the same and turned the tensioner wingnut almost max inwards but the pedal tension is still loose. The rear brake does activate normally though, not too early and not too late. I checked the spacers on the resr axle and they appear to be straight. I also made sure the guide rails on the drum lined up with the rail on the right side of the swing arm and tensioned my chain back to normal. I don't see anything out of its place on my back end. Any suggestions?