I have wheel weights for an MF 7, which I've always mounted with lengths of threaded rod into the hub, lug nuts to hold the wheel, then the weight and then lock washers and nuts. Recently an old massey dealer, told me that a special male/female lug bolt was used to hold the wheel to the hub, then the weight and then the original wheel lug bolt was threaded in. Sure enough, I found what he was describing in the parts book, but it's long been discontinued. Would anyone have a picture of the lug bolt he described? Thanks.