+1 on the remarks thing.

I usually go back in my logbook once a year and create a line called "Logbook Review". In the comments section, I then explain any addition (or substraction) of hours and then sign it.

Eagle just looked at my logbook and didn't say anything about it...but then again, it was just glanced at, so IDK.

But yeah, try to find those math errors and fix them and get those numbers to add up.