I thought I might let people know that I discovered a change to the OID for Queue Tree Bytyes.
From what I can see this has been in place since OS3.2 and above.
OID for pre 3.2 = ".126.96.36.199.4.1.149188.8.131.52.2.1.5."
OID for post 3.2 = ".184.108.40.206.4.1.149220.127.116.11.2.1.7."
Hope this helps anyone else.