My CTC-16XL Project.

[Bill R]

You do know that retrace lines were always a problem with older sets and new formats like VHS, Laser disc, and DVD right? More a problem with the format than the tv. You may need to repair the IF and tuner to make them go away completely. As far as the set goes, retrace is often caused by to high CRT bias. Do a proper grey scale setup and it will help. I don't remember if the 16 had a separate crt bias control, but if it does turn it all the way down then try the grey scale adjustments of the screen controls. If one does not produce a line, then and only then turn up the crt bias just enough to get that line and reset the others.
As far as the solid state rectifiers goes, I never had much luck with them. They seemed to fail just as much as the tubes. Anytime I found one in a set, I took it out and replaced it with the tube. Remember the design engineers designed the circuit for tubes and their current draw. 202ma cathode current is still a little high. I would shoot for under 200 if possible.