"Joe" wrote in message

i might be worried over nothing, but since it is a load
bearing wall, would mounting that "split" part of the system
to the studs on that wall create any potential structural
problems. i don't see how it would, but thought i'd get
some opinions.

Nope, it can take quite a bit.



it should be fine - right ? - how would a
reputable contractor seal up these holes after they've
run the lines ? (since the Tyvek, and CDX plyscore thats
under the vinyl siding is compromised by the hole)...is
it just a matter of injecting some sealing foam/compound?

Right. I'd use spray foam.