Hmmmm, Ian I'm not sure about what you think but I'd say get yourself through another set of fittings. Something doesn't sound right here ...

This is a problem I see SO often its frightening. Fittings should be done over 3 or 4 sessions because during a single session the "buzz" of fitting and trying to fit affects the swing results.

If you've lost that much distance and direction - definately get yourself "redone".