Can a stock fuel pump produce too much pressure?

I know that my son had issues with his pump he thought .
His Holley would run high in the bowls .
He adjusted the fuel regulator down to less than 5 pounds,,,,,same problem .
He adjusted the needle and seats down to where the fuel was well under the sight plug .
Drive it some and check,,,,always high .
Adjusted several times,,,,,never could get it right .
We could see the level low in the bowls,,,,,but it still would get high after a drive
He finally swapped the front needle and seat with a brand new Holley version,,,not aftermarket .
Fixed the front bowl,,,,,then swapped the rear needle and seat too .
Guess what ,,,,,no overflowing now .

Might not be your problem,,,,,but it’s worth a look !
I would also suggest having a regulator ,,,,,it’s good insurance .

Tommy