Another question about Zenith Disc caps.

[Eric H]

This is in a Zenith Flashmatic, chassis 20X20Q, it works pretty well but the vert linearity isn't quite right, the height and lin controls are all the way at the end of their range and while it's watchable it's not quite right (heads are squished)

I suspect items M8 and M9 (vertical integrator per Sams) might be the problem, these are 3 legged disc capacitor looking things.
Sams shows them as a resistor across the outer legs and a cap? to ground?
but no values are given.

They both appear to have 87. written on them, one has a green dot the other has a yellow dot.

Can I build them out of individual parts and if so what values should they be?