500 designs reached finally and I still have 12 or so saved for Christmas.

Jay, I need some info on your 5820 design series. I have always avoided using the ST-8 tube cause I could not figure out how to get the ST-7 motor mount tube to center in it. I see the 5820 design series is using centering rings. Please educate me to these centering rings and I will add one more wonderful part to my database.

James Pierson
NAR# 77907