Looks like we're on our own with this one so if we can't have a sticky thread then PLEASE no matter how insignificant your tips or hints are then PLEASE share them with others. This is the only place to do it !
After a heavy weekend with my SD1 I took my Audya out to tonight's job and was delighted with the sounds.
Also confirmed another solution. Here's my latest tip:

Pay attention to the trim control on the mic. Mine had been set too high. I had distortion problems with the harmonies and they sounded like Daleks.

Turned down the trim and problem solved . I had a great night listening to my own keyboard and getting paid for it !!!!
Happy chappie again