im thinking that's one of my problems too.... the tank.. the sump kit bleeds off fuel pressure so its always fighting to get the pressure .. I don't think the in tank set up bleeds off... im gonna run it for a few weeks and see how it goes.... over all its just not what I was expecting.. they kinda market these things as quick and easy with no cold start issues... not the case so far..
If you got stock tank, I think its very well an issue