Great information update from your end and your certainly welcome for the pictures. Too bad the 230 had a truly non-adjustable carb on it. Amazing how these little carbs can cause all kinds of frustration when they don't work correctly AND how much we take them for granted when the machine works the way it should!! Please do update your progress and hopefully your machine will be serving you soon instead of you serving it!! The positive end result of all this troubleshooting and info gathering will be when someone has the same or similar problem in the future. In doing their internet searching(such as what lead me here) if they come to this website they will find this accumulated knowledge that will hopefully help them with a direction to go or possible solution to their problem.