I need to replace a damaged rear dropout, but I'm having real trouble finding one that is large enough. I've run into this problem on several vintage frames: the tangs on the readily available replacement dropouts fall well short of the stays. The windows on older dropouts seem to be slightly larger. Is this problem surmountable? Are there dropouts available with longer tangs? Will the joint be sufficiently strong if the replacement dropout does not extend as deeply into the stays as the original? Thanks in advance.