Originally Posted by
peripatetic
You said this has been sitting in a shed for a long time. Have you looked over the housing and cable? If the housing's broken/rotting in any spots, you could be getting mis-shifts from the shifter to the hub...
Maybe you could take some pics of the relevant areas and post them here. That might help someone identify an overlooked issue...
The cable's fine. If you read the original post you'll see the hub won't go in to top even with the cable disconnected, which rules it out as a problem. Thanks though!