Bbk tapping noise in jug

Okay so I have a 2018 z125 and I installed the tb parts Bbk the 143cc but after installing there is like this tapping or ticking noise coming from the jug does anyone maybe know what that could possibly be? Maybe it’s not broke in or something I honestly have no clue but it’s in time there’s no exhaust leaks and valves have been adjusted but it’s still making the ticking sound is there a specific valve adjustment for that kit? Anything will help