If I may guess, the problem is not fixed yet. Your observation of no fuel in the primary indicated that fuel is not flowing into the filter fast enough. This indicates blockage between tank and filter. In my case it was blocked at the primary filter bracket. Remove and clean the fuel path.
Visit
Sail La Vie | 1999 Catalina 36 MK II to see how I fixed my fuel filter blockage.
Haro
Visit
Sail La Vie | 1999 Catalina 36 MK II to see how I fixed my fuel filter blockage.
Haro