Coupler alignment/bent prop shaft

Could the coupler alignment cause the prop shaft to wobble? My shaft seems to be about .5 off .... Or is the shaft bent itself? I hit a tree branch and dinged my prop, bought a new acme and threw it on and it was not vibrating as much but I could feel a very small vibration when under power, threw a dial on the end of the shaft and it's about .5 off so can the alignment of the coupler cause this? Or am I lookin at spending another few hundred to get a new shaft as well any help would be awesome.... Thanks guys!