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Few things, "Shorting out the stabilizer coil" is the typical first step in setting up a "Synchroguide" horizontal section, the schematic is not for that type.. Usually to trouble shoot this kind of problem, divide and conquer. Short 6CG7 pin 7 to ground, (Eliminates the synch section) and see if the horizontal can be adjusted to make a correct pic. No synch, so it will be wobbly). If so, then the horiz osc is capable of running on the correct freq. Then, remove the short. Your res reading from pin 7 to ground (open) is suspect, follow that back through the three 1M resistors..
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