Delta 725T2 90 and 45 positive bevel stops, mushy !!!! Do you use them ?

As I go through my manual learning and completing the adjustments I came upon the 90° and 45° positive bevel stop adjustments on top of the table in front of the blade.

The problem is the stop is not positive, it’s mushy like tightening a wood screw before it comes to a stop, you could force it farther but know not to. There is no way to tell when you have arrived at the desired angle. It does move the tightness closer as I adjust it but it is not positive, still mushy. I do not want to keep forcing a worm gear like that on what is supposed to be a precision machine.

Am I doing something wrong ? should I set 90 with my square and forget about using the stops? I have never heard anyone talk about these adjustments.

The T handled (bent hex wrench) that is sent is shown as fitting this adjustment as well as the riving knife, but the riving knife will only take a 4mm, not the supplied T-hex.