Look at Smokeydog's post #8Would someone please post a picture of a "properly fitting SSQA pin" when its engaged.
I will check this weekend, but I am quite sure mine is like the OP's.
I am almost 100% sure that when engaged, my pin hits about 5/8 of the way up (from the tip of the pin.)
Having a properly fitting reference would help a lot....(at least for me).
I find there's a fair bit of variation between vendors SSQA attachments and think Smokeydog's solution is the way to go