As has been mentioned, I would definitely check for debris.
I am not sure if you have the original rubber lines, or Teflon lines.
But this debris was documented and found inside a stock RV-12 Fuel system and was causing sporadic low pressures and engine issues.
Here is the original picture showing the debris clustered together.
So it is definitely something that warrants investigation to make sure that you aren't getting a blockage of some sort.