What Are These

I dimantled the carbs years ago, cleaned them and they have been sat in a box. I have just put them back together and I found 2 springs in the box I can't identify. Anyone have any ideas if they are off the carbs or surrouding area. They are not pilot screw springs as they are too big, ref example

Cheers Gaz

 

Tedjeparre, thanks a lot synchro screw.

Bit of a pig to install.
Cheers Gaz