I take it that your original starter had a Bendix drive with a separate starter solenoid on the bulkhead and your replacement is a pre engaged one. ...
Not familiar with that carb, but it's probably not much different from others. I've worked on similar Webers on Fiats and they were bad about having...
You might find more help over on DISCO WEB. There are write-ups on such problems and the forum folks help out. I understand there is a thing called a...