I got a Phoenix Classic trainer a while ago with an O.S 46AX on it. The motor has an 11x8 Master Airscrew prop on it. From what I can gather this thing is going to be incredibly fast ?

I am yet to even fly it so dont want it to be a monster just yet.

I live in the second windiest city in the southern hemisphere (Trees grow sideways!!) and I am guessing he has this sort of size prop so the plane will actually fly into a decent headwind perhaps?

After all I guess I dont have to fly flat out the whole time

I have an APC 11x6 here but cant get the spinner to fit over the blades on the prop without warping the spinner (It's a plastic spinner).
Is it ok to shave a little bit off the prop slots in the spinner cone to fit the prop or will that lead to problems with the spinner? I use a chicken stick to start the plane.