As you have him in Irvingdale, Qld, then we should eliminate your 1932 sighting because that Robert STEVENS was still enrolled in 1937 at same address as 1932 and earlier :
NSW ER 1937 CALARE, - Parkes
Robert STEVENS, Adavale, Goonumbla, labourer
NSW ER 1936 CALARE, Parkes
Robert STEVENS, Adavale, Goonumbla, labourer
NSW ER 1932 CALARE, Parkes
Robert STEVENS, Adavale, Goonumbla, labourer
NSW ER 1930 CALARE, Parkes
Robert STEVENS, Adavale, Goonumbla, labourer
JM (Goonumbla, small rural locality north of Parkes, between Trundle and Alectown, umm.... I have rellies out that way).