That sounds like the same problem that attacks many 6th gen auto transmissions. A guy I work with is about to replace his tranny due to this issue, which caused his car to hesitate, slip, and finally change gears much harder than it should. It's a defect that Honda knows about and even extended the warrantee for, but at 185K km it sounds like you are probably out of the warrantee period. I would talk to a dealer there and see what they say since the policies in the US are probably not the same as in Australia.