Like you Jnatcat, I use a Kanayama #70000. I've settled on doing 20 on canvas, 30 on the suede and 100 on the primary leather. I've stuck at that for a couple of years and been happy. Only thing I've added was I put lead on one of my canvas pieces. I read it can help, but many have said it's toxic. That may be so, but I'm trying it out.