When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
I wonder if there simply isn't enough drive current from the P259. 350mA isn't exactly a lot... You have 6 IGBT channels, so there are 2 spare after the coils. You could try a spare one of these - they can deliver a lot of current.I wrote on the case the IGBT channels that aren't populated to give you a clue.
let me know if it works when you plug it in this time mate,i may have a go at taking mine apart,