Need help with edelbrock 1406 carb

This is another reason I wish people would just leave these cars stock. All the mopars I had that were left factory original were ultra reliable. Chrysler engineered all those parts to work together perfectly. Then someone plays mix-n-match.
This person didn’t even have an air cleaner that fit the car correctly on it. When I brought it home I looked at it and the element had about an inch of space above it where it didn’t touch the top of the housing. Air and dust could just go right over the top of the filter and into the engine. I bought that edelbrock air cleaner because it fits the carb they had put on the car.
The plus is that the car has no rust and runs like a top until this.
Anyway the car has the regular block mounted mechanical fuel pump. Don’t know what the PSI is that it puts out,but what you say makes sense since it did it after I was on the freeway. If the floats bend under pressure sounds like that happened.
So I’m curious,what do you charge to rebuild a 1406? What regulator do you recommend? Where are you located maybe I could send mine to you. Or can you recommend a better carb for the 360 for a daily driver
These Edelbrocks are great carbs. They are more tunable than most any carb. Changing the fuel filter can allow crap to get in the float seat and clog it. If you watch a fuel pump work with a gauge you can see how they go higher with speed, you can also see how they pulse. A regulator limits the pressure at a good level and eliminates the pulses also. That is a good thing. Where are you located? What is your elevation? I use the usa made Edelbrock or Holley regulator. 4-15 psi and set it at 5.5 psi. Get a gauge for it. Ebay is a good place to look. What distributor are you using? What do you know about the 360 in the car? Year? Cam?

I'm in Iowa. You can message me too.

I wanna see more pics of this 68 Dart.