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From the shrunken raster it's clear your B+ voltage is way low. First step is to replace all the Electrolytic Capacitors, that might improve things a lot but ultimately all the paper capacitors will have to be replaced for it to work correctly.
It's a good start that you at least have some raster, that indicates that all the essential parts are working at this point, CRT, Flyback, Yoke, deflection circuits.
If you change all the capacitors it will likely start working fairly well though there are often other minor issues like drifted resistors and dirty controls and such.
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