Help with 215 OHV I6 2x1 set up

Where do you have timing set? I'm 6 degrees before tdc and when I hit gas quickly it stumbles before it really goes. I got 59s in it and plugs look good. Accelerator pumps on both carbs are also working good. Tuned with a carb syncro and both same air flow Ideas?
 
Advance didnt help. Put 55 jets in it and now seems like its starving. Thought it could be bad vac advance but i can see it move when I accelerate the throttle.
 
Try running without the vac advance. The Load O Matic will not work well with multi carbs. If you did fit a later dizzy with mech and vac try running just the mech.
 
If that '83 dizzy is vac only it may act the same as a LOM. Try it with the vac disconnected to get you static timing in the sweet spot. Mine likes 12 deg BTC. I stayed with points because they are easier to fix on road trips an the car is still 6v + ground. If yours seems like its starving with 55 jets go back to the 59s. Just tweak one thing at a time. You will get it where you like it.
 
Figured it out. Rear accelerator pump nozzle was only dribbling gas when i hit the pedal. Cleaned it out and Viola. Works great. Now I need to reset timing and all should be good. I'm gonna try about 8 BTDC and see how it works. Thanks for the help.
 
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