Well I made some adjustments, including as suggested to the voltage, and here are the results.
1. When powering up the Mac from a Cold Start (such as turning it on after being switched off overnight), the boot chime is about twice as loud as it's supposed to be. After idling the system for a while and switching it off, then back on (or just pressing reset), the chime is at its normal volume.
This still happens, not worried about this so much.
2. The raster seems to be a little out of whack. I'm assuming the CRT itself needs adjustment, but one thing i've noticed is that certain display elements will push the raster out of shape. For example when the "Welcome to Macintosh" box is displayed, the raster to the right of the box is "bending outward", so the right edge of the raster which was otherwise straight now has a "bump" in it. As soon as the "Welcome to Macintosh" box is gone and the desktop is displaying, this no longer occurs.
As does this, but the issue is nowhere near as bad.
3. Does anyone have a guide for adjusting the CRT on these? Rings, whatever. Height and width, brightness and focus is fine, just the shape of the raster itself.
Managed to adjust these myself, the CRT is now centered and working fine.
4. This little thing heats up quite a bit. Perfectly normal for a Macintosh, but this machine is going for longevity now, so it may be worth ventilating it. Instead of sticking a giant freakin' chimney on the top, i'd like to have something mounted inside the case. I can probably figure out where to wire it up, but the question is where to put the fan within the case. I'd put it directly below the vent if I could (since it seems to fit there), but it doesn't clear the analog board once the case is closed.
Now this has a positive and a negative... I have a feeling that voltage pot was set a little too high. Once I turned it down to a reasonable level the machine began to run better, but the heat output is also significantly reduced. Unfortunately the only reason I opened the case was to install a fan... and in the process of hooking up that fan I blew the fan and the fuses in quite a spectacular way. However, no harm done.
