very helpful video, managed to change same model after original stopped working, i am not really a diy person so video must be good. only observation was 1) i needed my wife to hold down the sink plug while i fitted the underneath bracket and clip, just not able to do that by myself. 2) the fitting back in of the main unit was difficult because it was very heavy and i had no space underneath to push it into place from below. took me over 40 minutes to finally do it. any suggestions on how to support the unit to help push it into position would be gratefully received. i had thought about a car jack pre actually managing to get it in place.