Just purchased a pair of Moog sway bar links and have some questions. I couldn't find a metric or sae wrench that would fit on the hex nut. Also, the nut will only screw on about two turns on the bolt before it starts binding. Upon closer examination, the threaded hole in the nut appears to be ovalized. I measure about 0.680" across one set of flats and 0.700" across another. What gives? Secondly, there are holes for the grease fittings on both ends of the link but they are not threaded. Are the grease fittings self tapping?