It will help, in the mean time lets check something.
Lets take a look at the synchronization of the carbs and to the timing.
Take the air silencer off the front of the carbs.
Look into the the carb throats and manually open the carbs. With the carbs wide open the brass throttle plates should be parallel to the throat. If they are not then adjust the linkage between the carbs with the linkage #17/18 in the first drawing.
Now close the throttle and make sure all of the throttle plates are closed.
Next we want to check the synchronization. Look at the throttle arm. At the top it attaches to the timer base. At the bottom is a roller that pushes against the carb linkage.
Disconnect the throttle cable from the throttle arm. Push the throttle arm slowly to open. Observe when the carb linkage just begins to move. The timer base should be advanced all the way before the carb begins to open. There is a mark on the cam.
If the carb begins to open before the timing advances enough then the acceleration will stumble. You can adjust this with the screw on the throttle arm.
Check these and let me know what you find.