paul5992 - regard JXF props.... I have had some, and they work well, but there are variations in firmness and rigidity from prop to prop. Try the "untwist" test. Grab a NX or 3W or Menz....try to untwist the blade and watch. Then do the same with the Xoar or JXF. In my experience the JXF untwists more easily than others. The very WORST out there for this un-twisting are the Master Airscrews, Zingers, and absolute BOTTOM of the bucket, the Top Flites.

Please know that I am not "bashing" products as I only share my personal experience and observations on these threads. If I do not "know" how something acts, I'll not comment.

In the case of props, I have done a lot of experimenting.... my DL's really are "happy" (so I'm happy) with the NX and Xoar 22 and 23 x 8's.

If you are concerned about hub compression, and still want to run a soft prop, simply drill four 1/8" holes through the hub like mounting holes. Get 1/8" hardwood dowel. You will have to tap the 1/8" dowel into the snug fit holes drilled, then simply put a drop of CA glue on front and back. The dowels will absolutely stop compression.

This is the same fix (only done with 3/32" dowels, or hardwood toothpicks) to firm up the cheap-ARF firewall engine mounting holes so they don't compress under standoff tightening. Works like a charm.