Not only am I not young, this 5th Ave. is about to put me in my grave. Yesterday I decided to take it to town because it was near empty on fuel. Boy it started right up and away we went - about 8 miles round trip. When I got home I started and stopped it several times; there seemed to be a slight vibration, not as smooth as it usually is at idle. This evening, while I was fiddling around out in the yard, I decided to start it up to see how it was doing and I am right back to square one; turns over but will not start. Of course I thought it was that screw again but no, the gap is fine. It's dark now, so I guess I start all over again tomorrow. Hope you'll stay close. Thanks