I disassemabled a recent purchase of early 80s Peter Mooney to re-grease everything. (I have two children, so I get interrupted to attend to them for various things.) I offten forget where I left off with my bike repairs. So, I am riding a week later. The chain keeps rubbing the front derailleur. When I get home I check it out. I never tightened the bolt holding the crank on the drivetrain side. Also, discovered I never tighten the bolts holding the rings to the cranks.