I was sort of expecting to see this with the 16LP4 as mentioned it needs a less magnetic field to focus than the 16FP4 that was in there.
16FP4 = 146 ma
16LP4 = 110 ma
http://suzaku.live-evil.org/focusa.jpg
The pics posted were taken with R209 set to minimum, but the field was still too strong, the entire sets positive bias is being shunted trough the focus coil, via the 2 centering pots (H/V), far end hooked to the main bias pi filter, which is then passed on to the bleeder network after the focus coil. (250v)
To try to get the needed range, I could change the value of R209, but that will put even more stress on R210, or what I will more likely do is put a shunt resistor across the focus coil like seen in the RCA 630TS to lower the field power a bit, 1.5k-2k or so.