4.5.99.902 Problem with i810 EDID not honoured for 1360x768@60

I'm testing the i945G driving a Hitachi panel that has a preferred mode 
of 1360x768@60Hz.
RC2 sets the refresh to 75Hz that is not allowed by the EDID. Attached 
is the config created
by X -configure and the X log at logverbose 8. I use 915resolution to 
set a slot tp 1360x768:

915resolution 58 1360 768

xrandr reports:

 SZ:    Pixels          Physical       Refresh
*0   1360 x 768    ( 720mm x 406mm )  *75
 1   1024 x 768    ( 720mm x 406mm )   75
 2    800 x 600    ( 720mm x 406mm )   75
 3    640 x 480    ( 720mm x 406mm )   75
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none

The panel reports 1024x768 75Hz

Why isn't 60Hz being used? Is the any of the timing info from the EDID 
being used?

Barry