Nutty, I do the same thing. Check every board and forum several times a day. And Im not even looking for a specific pin! Iv been looking for another pin for a couple months now and its just a slow process. There are many MANY re-conditioned and higher end versions of pins now and not alot that people are willing to part with for fair market value. Its the other edge to the "we all love our pins too much" sword.
Persevere brother! Sometimes it helps to put an ad out there and be super annoying about it. Look at Indianapwns. That guy was up everyone's ass about getting a WMS IndianaJones, and he got it! That kind of initiative and tenaciousness can definitely give you a leg up.
Nutty_50 wants a FUNHOUSE everyone! Spread the word!