Welcome Paul!
Unfortunately, this forum is still a little light on the piston guys - they never really transferred over from the old mailing list in great numbers. But we're working on that and more and more are joining! I also come from piston Commanders, but I had the old geared 520, so not really any relevant stuff about the 500S. But if anyone has a POH, I'd love to have one myself, so please send it to me as well.