Well... I wasn't sure when I posted it, but after seeing your responses, and in particular, the last response by Rich Miller, I dug out this photo and think Rich nailed it... Stan Ploski in Pete Chesson's #76. (It's kind of blurry, but check out the writing on the injector box):
Rich Guy, Don Wolfe, JB107610, and Rich Miller all thought it was Stan.
I couldn't figure it out for sure... but I knew you guys would!
Thank you to those who took the time to check it out and take a shot at it.