The problem ONLY effects hot idle immediately after restarting engine. After engine has been running, you can pull up to a stop, kick in the clutch and it will idle like a pussycat.

There is no fuel mileage issue that I know of and in every other way besides the hot startup idle problem it runs fine.

I'm not one to start throwing parts at a problem, but I am very close to replacing the idle valve hoses even though what I can see of them looks okay. I have not exhaustively searched for vacuum leaks since it idles so nicely when hot after running down the road for awhile.

I have not checked the duty cycle, but I will the next time I'm at home. I also will put it on the lift and see what the idle hoses look like from underneath.

Thanks for the response.