Many thanks for your prompt reply and information on your Classic key.  The schematic diagram did help, so, with that and the image of the key, I was able to adjust the key.

Incidentally, both my friend and I have always used a Vibroplex bug.  He recently had to change to the electronic keyer due to arthritic fingers/hands.  If the future dictates a similar decision for me, I will certainly be looking again at your fine selection of Begali paddles.