Probably a lot harder to reach, original layout had it much closer and used a shorter stick. My machine has the original layout, but with a larger Wico balltop (had to drill right THROUGH the base of the joystick to install the reverse button).
So, it CAN go in the right place, even if using the wrong stick, provided you are willing to drill one corner of the joystick base off, the plastic nut that holds the button on will also hold the joystick down (that, and the OTHER three joystick screws).