these manuals are also different then a tangible item mentioned above because they serve a direct purpose for the company. either I am planning on buying the plane, or already bought and need some info from my misplaced manual. either way there is money involved for the company. the free air mentioned above could simply mean the gas station is out of money, albiet a very small amount, but still something. (btw, you guys have to pay for compressor use? none in my area have gone to that at least, still free air! [8D] I have seen on my travels some areas do charge for it...