Carby booging down on acceleration

[Cooper]

Vac hose replaced and checked all OK. When I replaced pilot jet the top of the housing had a screw in place acting like a blank the the replacement screw came with a hole in the centre so I installed the new screw  Im not sure if the old screw or new one is the go.

 I dug up the sizes of the new jets they are main is 137.5 and the pilot is 45 which I think is slightly bigger than original. Everything has been cleaned and all new parts installed. Thanks

[Jonesy]

sounds like something when transitioning from idle jets to main jets? what about those jets with the cross drilled holes and a tiny hole at the end? emulsion jets or something like that. The little hole on the end was blocked on 3 out of the 4 on mine and it ran like a dog until I cleared them

[excess.11]

Does the vac advance unit hold when you suck in on the tube?

[steptoe]

1  was it bogging before you did the work,,,
if not
2  what did you change in way of adjustments while the carbs were apart,, if any,, change in jet sizes, new diaprahgms,,, float hieghts are a big one

I normally work backwards if some thing has changed after doing work

[excess.11]

Is the vac advance hose on the correct spigot?

[Cooper]

Hi Jeff yes checked timing and adjusted and choke setting is pretty much spot on. Gave it a ride after the adjustment still the same

[excess.11]

Coops....did you check and adjust  the timing with a timing light? 
Is the choke set and working as it should?

[Cooper]

Hi all just rebuilt carbys bike starts OK and idles well when you pull away in 1st it bogs down a little till it passes and away you go have adjusted mixtures balanced the carbys new plugs.Had a run today came back with sooty looking plugs. I checked mixtures and I needed to adjust as I got them wrong first time. Still getting this bog down on acceleration. The throttle needle adjust is half way which I think is right posi  Im I running to rich and bring it up a notch would that help. Thanks. Coops