That is consistent with what I'm seeing using StarTron (repackaged Soltron).
There is stuff that seems to be coating and sticking to the bottom of the
sediment bowl but the fuel in the top of the bowl is clear and the engine
runs fine at max RPM.

I pulled the filter yesterday and it looks good. I know this doesn't mean
much but there was no corresponding build up.

I went to the Racor dealer yesterday to buy a vacuum gauge but they were out
for the time being.

--
Roger Long