6 port fuel valve

[PbFut]

Has anyone else used this valve?
https://www.amazon.com/Compatible-Se...s%2C242&sr=8-4
I am experiencing erratic behavore with the sender unit internal switch. Unsure if the cheap summit sender is sticking or if the valve is not allowing the voltage to pass through the internal switch reliably. I dasie chained 2 valves allowing for selection of main and 2 saddle tanks. Flow works correctly but I'm getting sporadic or delayed sender connection. Or the sender units are hanging. Not sure which.