Saffire Firewire bitrate

[ncc101]

Im using a Focusrite Saffire Pro40, firewire, windows.    The firewire interface is Saffire Mix Control.  Sample rate I arm using is 48.   Using the Saffire Mix Control, I set the Buffer Size to 48 ( I also tried 64, 128).  When I fire up a JamKazam session, no matter what I set it to in the Saffire software, JamKazam  changes the bitrate to 32,  which causes clicks/ticks.    Focusrite says JamKazam should have a parameter to set the bit rate there, and the Saffire will take it.  Im not having any luck finding that parameter.  Can anyone help?