[miniman82]

On the scope pic: your top trace is not correct. The peaks should both be at the same height, so tweak the wave shape coil till it is. It's possible your actual frequency is not off by much, but with the wave shape that far off the whole thing may go haywire when attempting to sync an incoming signal. There was a really excellent explaination of the synchroguide circuit somewhere on the net, but I can't find it now. Something about how that double humped shape increases horizontal oscillator stability or something.