Hi Hemi
I cannot add much to what Dean has said,very much agree that your alignment must be out,as M22 is quite big and bright in my 8"SCT and so is M8 and M20.
May I suggest you put out a call on general chat to see if there are any other astronomers in Darwin to get together,and help you out.
There is so much stuff in the milky way galaxy that is visible now that scopes over 8" could as Dean said your scope could eat.
Objects over head are notorious for not being found by scopes not being aligned properly.
Best of luck.
Cheers
