Working on my 1958 Johnson Super Seahorse 35hp RDSL-20<br /><br />This motor has what is called a "fuel saver control." According to this CD manual I have, to set this you must have the throttle at full and the spark at full advance. I got that part. There is a collar/set screw that slides up the linkage arm. It says to slide that back to the pivot on the linkage, and tighten it there. No problem. But ... The instructions make no mention of the butterfly in the carb. If I set this up the way it says, the butterfly never opens. This can't be right. In a previous illustration it shows the thing set up with the butterfly at about 45 degrees. It looks to me as if I should hold the butterfly in the open position before I adjust that set screw... ??? In fact, if the butterfly is set half open like in the picture, wouldn't that directly cut the throttle back to half? Any advice is appreciated.<br />Tom