Great work, young man!
Just a quick tip on leveling the yoke: Don't attempt to slide the yoke forward (or rearward). Its normal position is 1/4 to 3/8 inch shy of being fully seated against the CRT bell. This is the 'sweet spot' for best purity. It is integral to the factory setup procedure on roundies.*
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*On rectangulars, it was 1/8 to 1/4 inch shy of being fully seated.