I just found and read
thru this
thread, my legacy came quite nice for the
threading issue, in fact, after months and months I just recently cleaned the threads up. I did have some misfiring issues till I got the switch set just right with adding two washers, one thing is to make sure and check from time to time that the screw is tight in the switch, it loosens up a little from time to time. also the screw at the center pins tends to screw it self in after carto changes some times, just keep a eye on it also.
my only complaint is the spring, it does not stat connected to the switch, and I always forget about that during battery changes.