My personal opinion is to always document anything out of the oridinary in your logbook. I had many mathematical errors in mine because I was a stupid kid just out messing around in my lil Piper 180 for 2 years. I have been to 3 airline interviews and have gotten hired 3 times. I credit my logbook passing inspection due to honesty. I documented everything very well and my totals added up in the end.

I would say if your totals add up you should have a problem explaining. I also keep logbook pro now on my cell and computer. Best aviation investment ever other than my CFI.