I tried to put it on but the hub? I think it's called that... The little star goldish thing is different from my other one.. On my old one it goes on and I'm able to tighten the nut and put a cotter pin through the nut without a problem on the new one I can't cause the nut won't go in as much cause the hub stops it...is it okay to put the prop on a vise and push the hub in a little? The back also rubs when I put the new one on thanks