Hi John,

Thanks for the response.

I usually fill up at the end of the day's run with the fiver, so I can get a fast start in the morning. And I have been getting a few hours of clean performance -- until the tank is lower and the day is warmer. So refueling more often might help, although it would slow the day's progress.

I have pondered adding another cooler. Insofar as I recall, nobody in this thread has mentioned actually doing it, or a supplier with suitable hardware. So that is an option with dangling questions...

And yeah, the exhaust noise issue has occurred to me, and would be a turnoff. In addition to my own objection, I might never get Maureen to ride with me again. A very last resort, I think.

I appreciate being able to add your thoughts to the mix.