hay matt sorry to hear about your 5 port sounds like you have had sopme bad days....

dam by the sounds of things your front engine bearing was tight , the ceramic bearings i hgave been using have been tko with no lekage at all..
i have just gott new ones the answer ones fromm MM to try out ..

what i have noticed is the standard ones seem to be hit miss with leakage eather leaks alot and thay dont seat in or leak alittle then stop in my experiance but i have never had a drama with ceramics