RCA CTC-9 Too much horizontal deflection

[lnx64]

I know, this is odd for me to be posting on this side of "town". I don't even own a roundie of my own.

But my friend, her roundie, an RCA CTC-9, has a little too much horizontal deflection.. It would appear the horizontal size is quite a bit too large, making people look fat.. It's a TV that has been handed down from her parents, it has NOT been touched as far as I know..

I haven't seen it yet, so I'm going off the text I received.. She uses it once in a while, but last week it was fine, today it's h-size is about 20% larger than what it usually is.

Is there a simple POT for this? Or should I be looking at something else?