When I worked for Honda, they only required maintenance records showing the trans fluid was changed. Since it such a common problem, there never was really any second guessing. Only time warranty was void - not maintained or heavily modified. That was may favorite part of the job, tellin' rice boy's Honda VOIDED their warranty.
One customers ODY came in with bad trans, we threw another in & the problem was still there. Ordered another trans & put that one in, same problem. . . . After the 4th trans installed in a week, it seemed that all issues were cleared. Customer came to get his vehicle & 10 miles away from the dealer the tranny crapped out again. That's 5 trans in a week(including factory installed), anyways after Honda sent out some people with a different trans, finally the 6th trans did it. Can you beleive that? I would trade that in right away if that happened to me!