The stuff came in from HK. I ordered a Turnigy 300 motor and the 8X4 props I got are too thick at the hub to use the prop saver or the collet. I'm sure I can find a thinner hub prop. My question is how is the prob saver attached? There are two screws that the rubber band goes around, I removed these but am unable to remove the prop saver adapter. What is the secret? I want to use the collet, but will use the prop saver if I have to. Either way the electric props I got are not going to work on either of them.