Share 'Conching with Kenwood Mixers'

I have seen a couple of references to people using Kenwood mixers to conche cacao for product R&D. Anyone know what mixers are involved (Chefs?) or whether and attachment is used? or how exactly its working?? I've tried mixing cacao in the 703 Kenwood Chef with mized results. The primary problem appears to be the lowest mixing speed is too high. Furthermore the K head does not move close enou…