RE: And the filter is clean and seated correctly ?
Is seated correctly. Possibly not the cleanist. How would this effect only third?
RE: Correct filter for depth of pan?
Still using stock oil pan
RE: only one o-ring around the neck or inside the pump inlet?
This one i don't know either way for sure. But sounds as if it would cause more problems then just this?
As far as the guage goes, i'd like to set one up sometime. Only conflict i have is since it only happens ever once in a while i'd have to fluke to have this problem with the guage hooked up.
Recently i haven't had any problems with it. Actually not once since my orginal post (over a month ago). Just to give you an idea of the frequency and the irregularity of it
Do you think that there is possibly a valve sticking in the valve body or something along this line.