I have a 1990 6hp Evinrude and need to replace or disable the safety button at the end of the tiller. My problem is I can't figure out how to take the dang handle apart. I've twisted, pried, yanked and pounded the tiller handle and surrounding parts from every angle and nothing budges. I've looked online at the exploded parts view of the handle and still can't figure how it goes together or comes apart. I was hoping someone out there has taken a tiller handle apart and could offer me some advice.