At 08:57 AM 6/20/2013, you wrote: >I have always wondered why lycoming and continental have steadfastly stuck >to ancient carb ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Because they work well and are quite reliable . I rebuilt my MS carb nearly 500 hours ago and have not touched it since. The only time my engine has sputtered was when I suffered a brain cramp and shut off the fuel. It's tough to reinvent the wheel. They're round and they roll. Larry Flesner