It's a GWS press-on prop. I had to slightly drill it out but had to make sure it was still snug. I then sanded the shaft a bit and put a tiny bit of thin CA into the prop hole and gently pressed it on. Once on, I gave it a small spray of ZAP. Again, these were the instructions that came with the Concrusher so at least I knew it would work. I'm keeping my fingers crossed for the maiden this afternoon after work.

Thats a pretty monstrous A10!!