The diaphragms are OK, i pulled a known good carby (Exact Match) of another trimmer, and, i even put this ones across to the known good trimmer, and it worked fine.
I will look into the muffler side of it, and the rings when i return to Dubbo in a fortnight, i will be taking some rings and a muffler i have here up with me, and i will report back when i see how that goes!