OK the voltages look with in reason. So you may have
1) a very slightly weak CRT
2) something very slightly off in the red or the jungle IC.
The pix looks very good otherwise. You may want to check
all the resistors in the red from the jungle IC to the CRT.
Be sure to lift one end to check. Beyond that you could go
up in value on the red out collector resistor ( typ 18 K 2W ) a little but
leaving it alone may be the best....
73 Zeno
LFOD !