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Good to see the TV is working !.
I can see some stretch on the left hand side,compression in the middle and a bit of stretch on the right side,horizontal linearity isn't so good on these TV's.There's the adjuster preset on the other side of the chassis tied in with the horizontal output transistor to slightly vary,may help,look in the manual and see if it recommends what to do with it.Not seen the warp effect on the right side before.
Your vertical linearity looks good,adjusting that preset you mention gives a non lin effect in the middle of the vertical scan I think,think best to leave alone looking at your picture now!
Make sure the 2SC41 horizontal op transistor isn't running too hot,the heatsink should be gently warm to touch and not roasting after say 20 minutes.Some early versions of that transistor tended to get very hot,for one of my 8 301's I took one out of a scrap later 9" set and it ran much cooler.
I think some of those connectors on the chassis underneath have short ground wires,may be wrong.
Hugh
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