Mukuni db 34mm carbs

Hi there, I have recently acquired a non running 1995 900s which had been sat dormant for years. So opened the fuel tank full of stale fuel and rust, so sorted that out & sealed the tank with Tankroxx sealant, so next step remove the airbox, piping etc, pulled the bank of carbs out to clean out float bowls etc upon reassemble of the carbs I noticed that I mislaid the two breather pipes from the carbs T joints, for the love of Mike I can't find them anywhere plus cannot find any part numbers for the said pipes! The bike runs but bogs out when revving but with ample choke she's good?

 

Any tubing should work if the ID is correct.

 

Thanks will measure up later, me being dumb though has forgot does the tubing just go to atmosphere or do they connect to another component?