13 pairs?!.Sounds like you spend more time returning them than actually wearing them.
And you paid $260 for the first pair

.I can see why they can afford to keep replacing them because they really don't seem
like they're worth anything.
You might just want to cut your losses and invest in another brand.Hell even a set of Basspro specials won't leak for a few years.
Since I've been a member here I've not heard one good thing about Orvis waders here.Not for nothing but you couldn't give me a pair of 'em.
But that's just my opinion.