Hint for convergence & purity on ALL sets.
Rough things in.
Degauss & do purity.
Turn the bright & contrast down a little & adj focus for
smallest dots.
Ignore everything but the center.
For center just picture arrows at 3 angles & the blue lat a side to side arrow.
It can all fall into place in seconds.
When doing the edges go back & forth with the center, they interact.
Always give the set a good warm up, the shadow mask can distort
over time. NEVER expect perfection !
The set looks good already, well done !
73 Zeno