I've got both so may have a tinkerishaw":35cv8sd0 said:You could just get a grip nut or 2nut for the top. I've never done this myself but always wondered whether just adding the nuts from a threaded headset would work? You might have issues getting the top bearing cover over the threads, but as it's alloy you could remove the o-ring and screw it down, maybe even cutting a thread in it as you go, making sure it's straight of course.