Gus, I'm in the same boat with you.
It's been 2.5 week since I departed with my K100D.
It has an annoying stripe dead pixels. Not just dots, but stripe across the upper 1/3 of th sensor.
So I sent it back to Pentax USA for repair before my warranty expires this October.
Well, from my experience sending my lens to Pentax last time,
actually you don't really need to ask for cleaning since they do that as part of the service.
My lens came back cleaner than when it was sent.
The annoying thing is we will be starring at these lenses with no body to use it
They said it will take 4-6 weeks to service, not including the shipping.
So, you're right, I think this is the time to get second body