DIY - you dont need to line up a sinker plate with the help of a dealer - do it yourself.
Dont be afraid to loosen the screws, even take them off altogether, to make sure that the sinker plate falls into position. Also bear in mind that screws dont last forever & new ones may need to be bought from a dealer. (dont even bother to try to find a screw from somewhere else - I went down that line & got nowhere)
scanthecat.com, June 2008