Small Engines (Lawn Mowers, etc.): Subaru/Robin Carburetor Issue, dremmel tool, robin engine

Question

Carb Detail  

Carb Detail Part 2   I have a Subaru/Robin engine (EX-17) on my granddaughter's go-kart.  While doing maintenance on it last year I broke off flush the idle mixture screw from the carb.

I cannot find ANYONE who lists the screw as a replacement part for the carb.  It just has to be available somewhere, but where?

Do you know where I can get one?  I have tried the factory-sponsored parts depot, but they acted as if I was crazy.

Help!

Answer
Take a look a the link below.

http://robinamerica.com/media/manuals/128980991381971250.pdf

I see the part you need but there is no part number.  Can you use a dremmel tool and cut a small slot in the mixture screw so you can adjust it?

Nothing on Ebay either.

Eric