Unless you have a dial caliber it's difficult to measure the run out on that small shaft.
Try this.
Put the prop back on.
(A new prop)
Stack some books up until they just barely touch the prop tips when they point down.
With the glow plug out and one tip pointing down make a mark with a pen.
Then turn the prop slow and see how far it's from the first mark.
Do this several times,
You shouldn't be off more then the thickness of a quarter and remember wooden props are off track as much as the thickness on a match book cover.(appx 11 thousands of an inch.)
GL and let us know how you made out.