Thanks so much for the followup. My multimeter does have frequency and duty cycle, but I had never used it. After your last message, I pulled the old user manual out to learn how to use it!
Result, after doing some checks, figured out the transistors I used are pinned opposite the ones you had specified in the OSH Park description. Problem solved!!! As I said, I am new at this. Learn something new everyday. Now on to the Mushroom growing…I hope!