Carburetor Pilot/slow running jet question

Hi,
I am trying to get my old monkey going again after replacing the kickstart shaft and have it running on choke but dies when I throttle or turn off choke.
I think it may be the pilot/slow running jet so have stripped the carb down to check out the jets and clean up.
Can anyone tell me if there is supposed to be a clear hole through the length of the jet - I have a spare carb and both appear to not have a through hole - I have tried teasing a fine pin through with no luck,
Hope someone can help please - also answer to colour code on earlier Q.
Thanks
Chris

Had the same issue bought a new one its the same, cant put a wire through but on a u tube video a man does I'm confused?