i got the checked last year and all looked ok but chap advised me for piece of mind to replace the bearings,
this was done but when i fitted the box, i noticed a very small weep of fluid between the main casing, i just kept an eye on it for the few months i used it.
when i removed it this time, i gave it back to the guy to check why there was a weep and it turned out when i painted the box parts, i hadnt cleaned the paint/lacquer off a face and was`nt sealing right
chap broke the box down, cleaned the casing properly and fitted new gaskets
the bellhousing fitted is the 1 i used when i had the box fitted to my zetec
slave cylinder push rod could do with being extended as i found it a bit short but i just used some nuts to take up the short... it works but is`nt the tidiest
hope this all makes sence, cheers davy
