Just bought some too and can't get them in at all, we ordered the BU582 version as I found a pic on here of them as fitted another member but they seem to have a slightly bigger lug on one side, having done some comparing of pictures online and checking on some websites the BU 585 version looks as tho it will fit , found people having similar issues on one of the Honda forums too, couldn't find the Silvatech in 585 so ordered some others from HIDS direct Xtech , just arrived this morning so I'll let you know how I get one once to stops raining!
Could just be luck of the draw on how well they're made I suppose,some of the ones there are Ebay links for on here say both 585 and 582 as equivalents , not really sure if there should b any difference but looks like it comparing the ones I have here, am sure someone will put me right if there isn't !