I will hopefully be able to dig in there tomorrow and will post my feedback.

I decided to order a 2044 just in case, wouldn't hurt to have one around anyway.

This might be a silly question but what is the likelihood of a solder joint going cold Could this result from the synth being moved around, or possibly having the ambient temperature of its environment change

If you have any other tips or tricks I would love to know. Im working very hard to build my skills, but am still quite the amateur here.

One last question, when measuring the voltage in a circuit, should I also have the common lead connected to ground

Would it make sense to measure continuity first

Thanks again...