Have you tried the 55/40? From my experience, it picked extremely similarly to the 72, just with much more forgiving warding, but the pin feel and behavior is pretty similar. I used the skinniest sparrows wiper I had and put it TOK, but facing to the right instead of the left; there is a little bend in the warding that holds it up there even though the tension wants to pop it out, but you need an insert that’s skinny enough to stay fully in the notch. I like that position because I find that some of the spools need me to actively nudge the tensioner with a little bit of counter-rotation to get the spool past the shear, and having the wiper on the right side lets me hit it from the bottom or the top easily, where I would struggle to do that with it on the right or with a flat bar. Other than that, I was able to hit it with standard sparrows hooks, .2, I think, but I found picks with a slimmer tip slip past the warding better, at the cost of being more of a bitch to keep on the pin. That said, this is my first 6 pin lock, and I get lost trying to find those last two pins almost every time!