I dont' think deflection yoke and beam magnets should be touched unless something is absolutely wrong. Quite some geometry adjustments can be done in service mode by keystrokes on the remote, digital if you call it.
46f510. two fresh stk394-250s, checked all resistors on deflection board. check glass and pico fuses. all board leds lit. check resistance of all solders on part side to connected parts further down circuit board with all levels negligable( .2-.4 ohms). checked between each solder for any bridges with mag glass and connectivity meter. the picture is much better but can't get inward bows out of the colors. I can get the center of the screen very good but the inward bows are there to stay. read every7 word of service manual and although it tells you how to access service adjustments, it says nothing of what each of the settings actually do. would rather know than change and see through experimentation. some examples of what i am speaking of are: g-y/b-g phase, dc restoration point,vd position offset, ect.