After replacing the boost cap, the set is now fine, so the LOPT is good, the linearity was expanded at the top, replacement of C413 made a vast improvement C210 was also replaced, these were the only pitch caps in the set to change.
It seems those green caps are fine, so I will leave them in situ.
I removed the chassis and tube to clean the mask and safety glass, this has come up like new, the cabinet was given a polish with T-cut, then polished with Pledge, it has come up a treat, the knobs and speaker grille were cleaned & the brass inserts were polished, then the set was reassembled.
The set now looks like new, the picture is excellent, there is a slight expansion of the top of the picture, and the focus control only makes a small difference, but the picture is well focused.
The set is very stable from switch on, the hold controls have plenty of range and sit happily near the midpoint.
This has been the easiest TV I have restored, the components are notable for their high quality, these must have been a very reliable set when new, I particularly like the swing out chassis, a real joy to work on.
The set has a date stamp of december 59.
I will give the set a good run today, and have some period programmes to watch this evening, I am now on the lookout for a set of legs to fit it.
Mark