I need some suggestions. I have a 1994 40 HP Force two Cylinder. My problem is a high idle. It idles at 1100 RPM and I can't get it lower. I backed the idle screw off so the throttle cam doesn't touch the carb throttle plate linkage. I put a little hand pressure on the throttle plate linkage to be sure it closes all the way. I took the carb off to see if the throttle plate was hanging open a little, it seems to close all the way. I'm stuck! Any suggestions would be helpful.