need more force is all. put bushes in hot water to soften, and put plenrty o copper grease on bush and drop link. way i do it is to put bush on floor, then place droplink on top. apply pressure with foot then poke the lip of bush in all round the endge with large screwdriver. once in all the way, stamp on it hard. vice would make easywork of it, but i didnt have one at the time