I'm sure the control would not work as well with leaf switches.  The reason why the SW yoke is such a good control is because of its precision aiming.  For this, it must be a full analog control.  Try playing Star Wars with a Happ super, and you'll get about the same effect.  I wonder if your yoke is a prototype.  Have you opened the body of the yoke yet?  There are probably leafs in there as well.  Shouldn't be too hard to hack though.