CTC 39 Great picture, but slightly low HV

[wabr101]

I replaced several weak tubes and put in a new 6En$ regulator, 3A3C Rectifier, and new 6CG7/6FQ7 drive tube. 6ME6 horz out and 6CL3 damper look good. HV measure below 25kv, actually about 21 KV...picture does not bloom and from dark (no raster) to full bright, regulation is solid....
My field service guide mentions an R118 1.4 meg resistor, but no HV control. Any ideas?
Horz current is at 207 ma...right near the 210 limit at nominal line voltage.