Does the angle of the engine and in particular the prop angle make a big difference in the planes performance? After my recent crash, which broke the firewall away from the fuselage, I epoxied it back in place and it fitted back in place like a jigsaw piece.
However I have now noticed that the prop angle seems to be down slightly say around 10 degrees down from being horizontal.
Is this normal anyway, I cannot remember if it was on that angle before the crash and as the firewall fitted back in place nice and tight I am wondering if it wasn't perhaps like this originally.

Thanks,

Troy.