Part #22 in the diagram. Your choice of 3 lengths (44.5mm, 45.5mm, 46.5mm).
https://www.partzilla.com/catalog/suzuki/motorcycle/2005/boulevard-s40-ls650/...Where do you want/expect the clutch friction zone to begin? If engagement begins 3/4 of the way from the handlebar grip (beginning of the friction zone) AND the clutch fully engages by the time you fully release the lever, you're actually in a pretty good/normal place.
I prefer a minimum of freeplay (like the thickness of a quarter at the clutch perch). So if the friction zone begins at 3/4 of the way from the grip, it's pretty ideal for me.
I know some people like a lot of freeplay (slop) in the clutch lever. They want to have squeeze the lever all the way to the grip to fully disengage the clutch and their friction zone begins at maybe 1/8th release and the clutch is fully engaged by the time they release it 1/2 way. And then the lever just flops around with all that freeplay slop. This feels "yucky" to me, and I don't want to be clenching the lever all the way to the grip like GI Joe with the Kung Fo Grip to stay out of the friction zone.
If your clutch fully engages (no slipping under load) and fully disengages (no creeping when you're stopped and in gear), you don't have a clutch problem. You simply have a comfort or expectation mismatch.