Carb question

[CMGoldie]

Rebuilding carbs for the first time on my own. They have been sitting broken down for a couple years. I believe I have all the parts. I only 3 screws of a certain type and I can't identify them off the blow-outs of the carbs. Could anyone tell which part they are and where they go. I would appreciate it.





I hope to rebuild them this weekend so any info would be appreciated.

[Maz]

They look like emulsion tubes to me. They fit under the main jets. Should be one per carb so.......
Maz