I have a question I got this 115 and as you might know that this model only idles on the top two carbs until the engine comes up to about 1500rpms then the other 2 kick in. Well I'm wanting to see if you or anyone knows if you can just put the idle circuits in the 2 lower carbs, they look exactly the same except they don't hve the idle screws. They have plugs screwed into them in place. Now is it possible to just but 2 idle screws and 2 jets and install them instead of replacing both carbs.:confused2: I know how to do this type of work just wanted to find out if it could be done, or if anyone has done it before. Thought I would ask before I tear it apart.