If you have track dropouts then you could try surly tuggnut which has a QR adapter. If you don't have a track dropout then you could try the steel QR (try harriscyclery etc and explain your problem). Steel QR's with longish handle can be tensioned well so that axle does not slip. You probably have a aluminum or plastic QR. If the QR trick does not work (which I doubt) then you have no recourse but to get a rear hub with track nuts.