Okay guys... I disassembled the carbs and cleaned them really well. I inspected each part and they were all in good shape, well within spec on all measurements. No wear on the idle screws or the needle valve. I set the idle screw to 1.75 turns out from seated. The engine starts fine, but runs fast.<br /><br />The manual says that the idle screws should be no more than .25 turns + or - from the set position. I can't get this thing to idle down! The throttle screw is not even touching the plate. I.E. it is not affecting the idle speed whatsoever. When I try to adjust the idle screws in to slow down the idle, I go past the .25 turns (somewhere around a full turn) and then it runs like a bag of hammers, and eventually dies.<br /><br />I don't have a tach so I can't give you any specific numbers, but when I engage the forward gears, I get a bit of a crunch. Not good I assume. The original problem was a rough idle. Where should I look now, or how do I properly adjust these carbs? Do I start with the top carb, or bottom carb? Should I look at timing or electrical?<br /><br />I'm a newbie, but I video taped the disassembly, and I am very meticulous. I am absolutely certain I got it back together correctly.