Err the prop is specifically aligned as per the manual for a reason, that is the prop is in effect the actual flywheel and is aligned with the crank to "throw" for want of a better word the crank over onto the next cycle, you cannot simply alter it. If I remember I will look at the manual tomorrow for you to see the actual position it should be in, but if it is the same as the Lycoming it is TDC no1 and one hole clockwise looking at it if memory serves me correctly. they never normally sit horizontal, again if memory serves me correctly when stopped so you probably have it in the wrong position, which is why you have vibration as it isn't in balance with the crank...........