[Merv and Sharon]

So now I am looking for the Heavenly Motor Builder's workshop? OK, I think I have the picture. Find a good engineer/motor builder and work with them. To either replace the existing heads with a good quality alloy set and a mild cam OR rework the existing heads as you describe in prosaic terms Phil. The MasFlo is then able to be fitted and tuned to suit. The listen for the sound of wings flapping....

Hope I have this right!

Merv