1980 kz1000 ltd

working on a bike for a friend he has a 1980 kz1000 ltd stock air box and a kerker header with baffel it has 28mm pumpers plugs are showing rich i took the carbs apart it has 115 mains stock needle and 22.5 pilots any help on what to change or would a good overhaul do it

I have one of those too. Sounds too rich to me. Stock mains were 102.5 and stock pilots were 15. My bike has 107 mains and 17.5 pilots but I have a Z1 airbox on mine and the carbs are off a '76 KZ900. It runs perfectly.

thanks for the info i didnt want to get to radical with changes i will try to lean it a bit just didnt know how much is too much without burning a piston