Sylvania Superset Update

[TrllVl90]

I checked the filament voltage and got 2.2 (or 1.5 if I used the low-impedance setting). Both seem wildly incorrect. Would the retrace-cap value being low also drop the voktage? I know I got some cheap ones, but I'm not certain what the effects of high capacitance vs low capacitance are in the circuit.

Also I'm assuming I measured correctly. I measured across the two filament joints (in my case pins 9 &10).

Thanks in advance.

Edit: I also tested the voltage within a couple minutes of turning it on rather than waiting until the image became clearer. If that matters.