hiya lee!
I live in campbelltown so i am guessing that my skies are similar or worse than yours (proabably the later) and i use the exact same scope as what you have...
cent A shows quite well in my scope as a large fuzzy blob disected thru the middle with its dark lane so this is what you should be seeing too. I usually have to take a few mins to find her as i dont really have any guide stars to help me tho. so did you see the hamburger?