Can anyone help me please? I have had my 987S about 2 months and all of a sudden the wipers have gained a mind of their own. Normally one touch down should do a full window wipe but now they stop as soon as you let go of the wiper stalk? Also, i have lost the intermittent setting on 1 click up on the wiper stalk. It just stopped working and occasionally the wipers just go off themselves without any input from me. I would greatly appreciate any advice on how to fix this - if i take it to a mechanic it will cost a fortune in fault finding labour. Thanks in advance.