I picked up the regulated power supply with the goal of modifying it to output 5 volts.
https://www.parts-express.com/power-...6-way--120-536

I read one thread about a guy who was using the 6v setting and it was suggested that while this might work, it's probably not the best idea in the long run.

My SBT is running fine with the power supply set at 4.5v. Is this damaging anything?

For those asking how a person who wants to modify this thing does not know how to answer this question, it's bc Dad.