sync on green to horizontal and vertical wiring seperator.

Hi! This is getting frustrating. This is fairly on topic because I run older Macs (1987 to 1991, and many nubus video cards) that does not have native separate syncs by design. I'm using a very dim Mac high resolution monitor. If adjusted brighter, it will lose sharpness. It's already adjusted perfectly and this doesn't helped. That's bad tube, caps that I can check with my ESR are replaced already. This is killing my eyes staring at that dim monitor bought about this thinking to solve that problem because finding decent monitors with sync on green and composite features that does have good tube is getting harder to find. I do have a semi-working Nec 3D but tube is real small! And at other extreme, I have 20" Nec monitor but I'm not gonna drag that thing here. HUGE and power hungry. Except I have this dead 17" with all this features is IDEK Liyama waiting for schematic but that will be long awhile till I have money. The important details I need is fusiable resistors, they blew and cooked off the numbers completely. But I might have one or two monitors I might able to extract certain IC to split the sync out to drive a peecee monitors which are in plenty around here. Otherwise if there a way to build that thing from scratch is nice. Cheers, Wizard