I have a hydraulic cylinder, with a telescoping shaft I'm trying to mate to a rotating arm. The cylinder is mated to an fixed ear at one end with a concentric mate to mimic a pin. I'd like to mate the clevis at the end of the cyliniders telescopic shaft to an arm mounted to a rotating shaft. It refused to mate up. I even tried making the hole in the rotating arm into a slot, and use a tangent mate, but it's still no go. Does anyone out there have any experience with this sort of thing. Seems pretty simple to me, which just makes it more aggrivating.