Mendota, the other thing you can do if opening them up does not quite work is to sand down the curved area on the top of the end link where it touches the case. If the hole is lining up too far away from the case this may help. On my 1016, I have WSO 580's and the end link hole placement was a little farther away from the case lug holes than I would like, so took some sandpaper to the curve and shortened the length ever so slightly and now they fit perfect. I have used a dremel for this but found the best results using wet/dry sandpaper by hand.