Problema NTSC ZENITH 16Z8C50

[colortubeman]

high purity and controlled using only the white raster with red cannon.
I have also demagnetized with an external demagnetizer.
The problem is that I have reconstructed on the circuit and without the layout of the model can not run well.
Surely theres a problem on the piloting of the burst may signal the horizontal oscillator is not ok.
I've tried in many ways even with capacitors applied but you get only a mismatch of color, but the problem remains.
I'm sure that if I do well in the scheme just to make it work maybe some else is missing capacitor but I can not figure out where.
I copied the scheme to rebuild it is another model of ZENITH and certainly is different even if the valves fitted.