Hi Dave,

I just installed a brand new YS63 on my Flip 3D, and was surprised it had no compression right out of the box. Well, maybe it's missing oil and fuel in there to seal the gap, so I went ahead with the break-in.

I since then had a couple flights on it, still too new to say yeah or neah, pulls the plane OK but still no compression!! I can turn the prop with my pinkie, I can't barely feel when it's going through the compression!

That's a big departure from my 140 that make your wrist hurt when you turn it! Is that normal?

Ben