IMHO.... I don't think they will be looking through 1100 hours worth of pages of log entries and notice a 10 hour gap or anything like that. Just make sure your times add up IE: single+multi+ any other kind of flying and make sure they make sense. It shouldn't be an issue if you made a small error. If you want to note the difference, and carry on to the next logbook, then do that; I wouldn't try to change every page.