I have an indesit washer dryer which has started to leak, I watched to see what is going on and when th water drains into the standpipe everyso often the water backflows and comes over the top of th pipe and all over the floor. I have tried readjusting the amount of hose that goes in it, and did think about replacing the pipe with a taller one as the pne i have now is only 46cm off the floor but i cant get the pipe out to change it. I have checke the outside to see if water is coming through and hav tried to flush it out and it doesnt appear to be blocked - any ideas?!