No problemo. The one I wrote out may still have some boo-boos in it.

It's funny - some people "folk process" tunes or lyrics in their head rather quickly. They make a mistake or forget something and fill in, or their brains tell them another word or note is the right one, and that's how they remember it. I'm afraid I always (ok, well, "usually") remember the way I originally learned it. Not saying either way is better. What matters is singing the song!