Dont mind which problem i sort 1st. i'm on mains water, supplying about 1. 1/2 bar pressure, put both basin tap and the shower on and the gas flame increases twofold, but the pressure in the shower is not sufficient to get wet.
As far as the washing machine goes it's taking to long to complete each cycle, ( wash, rinse, spin.) each action works great.
hope you get a result soon Nigel. :)