Thanks 3B.

You'd think it would run better and get better than 8 MPG! I put new valves and guides in 6 months ago and new distributor and seem to be re-checking everything every couple weeks with no change.

What continues to puzzle me is that there is a small exhaust manifold leak on the 2nd outlet (cyl 2 and 3). When the engine misses or drops RPM, I get a "puffing" through this leak. When it runs smoothly, it doesn't puff through the leak. Does that make any sense??