Everyone CAR 30, Part 145, a LAME or a Pilot need up to date manuals "on hand at time of maintenance".
Sure but I received back overhauls and repairs in the past with out of date revisions.
You think some GA dude with his Cessna 172 cares about manuals.He wants to have the cheapest job possible. I am sure he would be the first guy to sue you if something went wrong. That is why I am happy to be away from GA and private owners. The liability is too great.