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your brightness focus issue and lines which are retrace lines and lack of brightness suggest a weak crt , if you are not planning on running it for hours on end and only an hour or so a day or every other day I would put a brightener on it , you will get better brightness , contrast and less of the lines and control the focus / brightness , if you had a crt tester you could see what it reads , my Dumont has a weak one so I put a brightener on it but added a resistor so its only 7 or so volts , this is enough to improve the picture and not push it that hard , at 7 volts emissions rise to good on mine, a regular brightener could be 8 or 9 volts , If you don't have one I might be able to space one.
as far as the wiggle it could be where you are at in tuning range , if you reduce the agc it may improve this as well and reduce the wobbly effect .
mike
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