I have just bought a Bosch WAQ28462GB and the 'instruction' leaflet is very vague! I'm not sure if I'm supposed to remove the four bolts at the back of this washing machine machine, before I install it? There are four plastic caplet type things that look like they may fit, if the bolts are removed? I'm pretty confused, and frustrated with the pathetic 'instructions'! If some kind soul, would point me in the right direction, I would greatly appreciate it. Kind regards, Louis.