Ran out of time today to get any real work done. New fuel filter, new plugs and a cat bypass pipe arrived from Pelican this evening.
I was prepared to rely on the machined halves to form a seal but after reading the posts I have decided to take it apart. I will seal it tomorrow using Aviation Form-a-gasket thinned with denatured alcohol or a product called Pliobond thinned with MEK. This technique has worked well on several aircraft applications where gaskets are not used.
I will document this process with some pics that will answer some of the questions about calibration.
Mark
P.S. In answer to one question the shiny particles in this picture are residue and not metal shavings. They were slick like varnish
and absorbed the flash from the camera. Other light spots in the pictures are sawdust which came of some pine blocs I used to protect the machined surfaces while I removed the center flow
divider.