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You won't get many hits on that carb in particular. You'll find plenty if you look for Webra Dynamix which it's a copy of. Your carb has a "remote adjustable" needle. The lever on the main needle adjusts the mixture with a servo.https://www.rcgroups.com/forums/showpost.php?p=33740527&postcount=12
Hello Dave,The heart of this carb will be the needle taper and jet. If you are thinking about the 917; You will need to be able to measure the needle taper precisely and then reproduce it numerous times. The rest is just precision engineering.Mike