Those are through-hole leads and vias, correct? :?:Ok... another update.
I've scraped off the solder mask over that via that leads to C8 very delicately, and tried to solder a wire to it. bad idea - the wire wouldn't stay in place as the solder was heating up . Long story short, I ripped out the top of the via connected to C8 + by accident. Can anyone tell me where it leads, so I can manually connect it please?
EDITI've now also lost C4's negative lead...is there any hope?
If so, you've soldered the wrong side, pre-SMT boards of that vintage were "Wave Soldered" and any connection in a through-hole doesn't actually need the top pad unless there's a surface trace connected to it. In that case, repair the damage with a rework patch (those little pieces of wire commonly found on old boards, either coupled with an intentionally cut trace to remedy faulty PCB Design, to complete a circuit that was accidentally left out of the PCB design, or a "naturally occurring" faulty trace connection on an otherwise perfectly serviceable PCB) and be done with it.
BTW, from the context of your posts, it seems to me that you're describing traces, not vias. IIRC, a via is a through-hole with no component lead soldered through it. A via's purpose is to make interconnects for traces on different layers, either top to bottom on a "two sided board" or anywhere on the layers between on a "Multi-Layer PCB" like your Classic II's.
Check for HiRes scans of your board in the NuBus Mafia collection over at Applefritter, there may be all the reference you need to fix your board there. If not, you can certainly find the end points of the trace with a continuity tester.