Excellent job! -Now, I might be a lousy reader of your step-by-step walk-thru -
but am I correct in assuming that the dished pulley fits between the castellated nuts?

And when finally adjusting the pre-load, you're holding the inner nut (re: to the spindle) with the hook spanner,
whilst tightening up the outer one with your clever crown spanner, pinching the pulley between the nuts?
How much axial play is lost when you're tightening these nuts?
Did you do this adjustment when housing is warmed up or when its cold?

Perhaps I'm moving ahead a bit, and should relax, waiting a few posts for the answers?

Keep up the good work!