[ariadne]

From what I've gathered from others and my own experience, rib pain and lack of adhesion can arise from the cup size being too large. With your chest size my own view is that you shouldnt be starting with anything more than medium - in noogleberry cup size - 11cm diameter . Quite possibly someone has convinced you to "go large". If you are less than half filling the cups at comfortable pressure then a size smaller could work better. As your body gets used to it, adhesion will improve but if its very difficult now then evaluate the cup-size issue.
Hope this might help.
A