Originally Posted by Wookster
Fix the 450. turned out to be about $78 for all the parts. Including the revolution blades. These things are junk. They don't fit. Now i either need to return them to the hobby store, or find a way to add spacers or something. with the grips tightened down till they are out of thread the blades still have enough play to easily touch the boom. Avoid these blades.
I don't think it's a problem with that brand of blades. I had the same problem with 2 other brands of carbon fiber and fiberglass blades. The wood blades must have to be thicker. What you need are shims
or washers. The one I linked to are for the 450X, which look like the ones that came with my flybarless head combo for the 450 3D.