Join Date: Sep 2007
Location: North Somerset, England
tyne4728 where are you based? There are plenty of tales about premature rear hub bearing failure, there are also some like me who have an F4 750 \which clocked 27k miles without issues, I only replaced the hub bearing out of guilt in the end.
Certainly a check and inspect before any long run to Assen or Europe. As for service histories, most bike shops do not even look at the hub or know how to service it, so learn how to do it yourself, simple task few tools needed and plenty of help and advice available here.