I have had to dismantle my forward control unit (1975 Johnson 50 hp)to replace a broken shift linkage. I am now unable to re-assemble the unit as I can't get the detent ball and spring into place. Do I need a special tool, is there a trick technique or is it a job for an expert mechanic.<br />This is sooo frustrating.<br />I will appreciate any helpful hints.<br />Regards,<br /> JayVee