RCA/GE CTC177A horizontal centering

[OvenMaster]

I've got a 25" GE CTC177A chassis. The pic here shows that apparently my picture is too far to the left:
http://videokarma.org/attachment.php...8&d=1292046032
I looked at all the service adjustments and I don't see anything to shift the picture horizontally, only vertically.

Horiz free run frequency
Horiz phase
Width (27/31"only)
PIN Amp (27/31"only)
Vert center
Vert height
Red bias
Green bias
Blue bias
Red drive
Green drive
Blue drive

Will any of the first four adjustments shift my picture to the center?

Tom