MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I've been trying to get my Crossfire off the ground with the MultiWii, too. I'm having a similar problem to the one you describe. I think, but have not confirmed, that a frame flexible mode is coupling back into the rate gyros on the MW board. What I discovered, so far, (and the jury is still out on this), is that smaller props help. I was using those "bendy" 10 x 4.5 electric flight props for initial testing but discovered that the shorter 8 x 4.5 electric flight props are a bit better. Doesn't help endurance much but I think it helps quiet things down a bit. I suspect moving to large, carbon props will chase this problem away. But, I haven't finished all of my initial flight testing yet. Will update this as I go.