^^^^ thanks...i am going to take the pump off again and search for the anti-airlock hole to see if a) it exists and b) its not blocked.
I take it that I absolutely need one, right? If I have to drill one, I will drill it in the coupler connection below the check valve of the backup pump.
I take it that I absolutely need one, right? If I have to drill one, I will drill it in the coupler connection below the check valve of the backup pump.