No, it wasn't under warranty. We had it done last summer. The first time at Braezel Brothers in Centralia and they just replaced the master cylinder (Dave was almost literally standing on the brakes - they tried bleeding, no go). And they worked fine after that, except that about 1 month later we had a leak from under the front of the coach - the booster pump went. They originally didn't replace the booster pump in order to save us money. Best laid plans ..... Anyway, we now know that, at least for us, it is better to replace whole assemblies so that everything matches. I think the whole assembly was around $1000 including new hoses.
Haven't had any trouble since then and the brakes are very responsive. And in a panic stop (think Chicago traffic on a Friday afternoon
) they did just what they needed to do.