Ive ran this setup for about a year without any real issues. I just decide to change my fuel cell and figured Id see if I should up the size of my return while Im at it along with any other changes....I am running a 3/8 return and 1/2 feed.... My regulator is the backpressure type too...

Should I up the size of my return to 1/2 (-8) as well???

and I still havent decided if Im going to remove the foam or not....... Thanks