Vibration

I've been trying to figure out where some vibration as coming from.  I had thought the gimble might have been damaged in the previous incident or the new mount might be making contact.  I certainly improved things when I cut back the gimble but it was clear the whole vehicle was vibrating in certain conditions.  Then I spotted this on two props.

The tip curves up and is bent out of shape.  I suspect this happened in the same crash as the mount breakage.  The old Iris props would have simply snapped, these seem to bend a lot but not break.  The bad thing is this can cause a lot of vibration and you might not know it.  I'm also on the hunt for a better source of props than 3DR.  I don't know if the mount is standard though.