Need help locating an Air Jet for Yamaha carb

[Rich]

Took the carbs off a 1988 Yamaha 175 to clean out the junk. When I was reassembling the last carb, I was tightening the Main Air jet (which is a little brass screw with a whole in it to allow air into the carb)and the head of the screw broke in half. I was able to back it out and the carb is fine, so i just need a replacement. Here's the kicker.. Yamaha no longer sells the part individually and they don't even list it with a part number any more. The only way to get a replacement is to buy a new carb for big bucks.

The size of the main air jet is 200.

I have scoured all the local outboard shops looking for a replacement. I have found 190, 210, and 270. I can not locate a 200 anywhere.

Does anyone know of some back alley shop that would carry a bunch of older Yamaha carbs that could be parted out or bought full for a reasonable price?

Thanks.

Rich