Just curious really, i have an Alto SZ4 2012, the windscreen washer jets won't adjust, they are probably seized, so i looked online, they are very cheap to replace, i looked under the bonnet to check what type i have, of course they are not easy to get at! has anyone removed theirs? do you have to remove the wiper arms so that the cover lifts out? or how does the cover come off that the nozzles sit in?