I had trouble with wrong voltages and currents in the horizontal unit too. Read
http://audiokarma.org/forums/showthr...t=30364&page=5
and the following postings. I have renewed all the resistors on the horizontal oscilltor board. Some of these old resistors are crumbly. After renewing I got the correct values. But be careful with soldering. I had a short between grid and screen of the 6CB5 with fatal consequences.
Check R603 too. In my manual it has 150K, not 100K like in yours. In the set I found 90K and changed it with 150K.
BTW: Is A.G.C. ok? The first anode of the 6U8 should have -30 thru -70 volts. (Without signal input 0 volts).