The issue here is people using the wrong sized jumpers; the jumper for a 2.5" drive is a 2mm jumper, whereas people seem to be using 2.54mm (0.1") jumpers.

It's not just the pin pitch that's wrong, it's the pin dimensions too (which means it's easy to get it wrong. The correct jumpers are the little ones that feature on the empeg main board (near the docking plug connectors). Don't steal these though, as it needs them :)

The correct jumpers are sold by farnell, in packs of 25: code 510-920 (blue), 510-932 (black) and 510-944 (red). These are *amazingly* expensive though - £4.99 for 25 jumpers (yes, that's about 30 cents *each*).

Hugo