No - the filter is fitted just with no oil!

All good. Just meant to try it if ya want minus filter as chasing an over-rich issue.
Filter minus oil can't get any cleaner or less restrictive than that with filter in place.
But in the end you'll have to squeese some oil through.
But back to the main issue -whats causing over richness.
Best of luck. Must still be some luck left i hope.
Not sure if i'm on the right post now--better go look back.