John I called them today and they only will do the BG400 pumps.
Did give me an idea of whats wrong with my BG280, said it's a design flaw from the start, no parts available to fix it either, it wears out and lets the pump wobble and then it won't keep up with the demand.
Sounds like I need another source and or get a new pump.
Guess I will start the looking for a new pump.
Thanks John.
David