Glad to see progress.
You just replaced the fuse? I'd me weary of another failure. If the secondary pump is seizing it will do it again. Most probably once the fuel level gets low enough for it to suck air once.
Just based on the pain of getting in there I'd replace both again.
One of the big no-nos is "testing" a pump outside the tank.
This dry-air testing damages the pump.
They do not just have one failure mode.
They can simply stop
They can fail to hold pressure
They can run at low psi
and worst of all
They can work intermittently :*(