I just got my 77 cimatti city bike home, rode it around the block once then I had to go to work. it was running great. Then this morning I woke up tried to start it and the "starter lever"? wasn't engaging. So I tightned the cable. After I did that it started, but semi hard. I rode it around, and it was going incredibly slow ( around 5 miles an hour) It sounded like the engine had no power it was just a low rumble. Did I maybe tighten the cable to tight so now it won't go back to the "neutral" position? Or is it another problem. Sorry about the terms. I don't know to much yet.