BDQ-750 Q-Series Quick Fuel Carb Vacuum Port

[moparspares]

I have one of the above carbs on my Duster 408. I have run a vacuum hose from my Intake to brake booster check valve and the carb also has a vacuum outlet which I have also run to my booster check valve which is a dual outlet. Basically my question is can you have to much vacuum at booster. Brakes are grabbing and trying to get to cause. Would it make a difference or should I just block the carb one off.

 

[67dartgtgo]

I don't think I've ever seen that and I'd be curious as to why. Everything I've ever seen has only had one vacuum line to the booster including my own....when I ran power brakes. I've seen the duplex fitting on the booster but with a cap on the un-used nipple.