Exhaust manifold leaks. Reface or replace?

[Dolores]

Hello again in the US, I am falling out of love with the RV. Every time we take it out for a weekend, we seem to come back with another problem.  Our manifold is still blowing, and (I think) beginning on passengers side too.  All I really need to know is this: is it better to have the manifolds 'faced'     OR    buy new manifolds altogether? ?    Any advice as usual will be appreciated.

[Oz]

First, which RV are you talking about since you have two listed?

Have you replaced the manifold gaskets?  If so, did you check the manifolds to see if they are warped or cracked?  If not, just because they leak, it doesn't mean they are bad an need replaced or refaced.  It could simply be that the gaskets need replaced and the manifolds can be checked in the process