I have a custom system software for the Davis DLX650 which has a modified gamma table, which I've sent to Robert. It has the "Natural Colors" from the K revision of the system software (which tears) in the L revision of the software (which doesn't tear). I have 4 tables, with the green level reduced by 10%, 20%, 30%, and 40%. I even changed the labels in the Color Manager to accurately reflect the new settings! I'll be happy to mail it to you.
I'm still toying with the idea of releasing some shareware which lets you create your own curve. Ideally, it would be coupled with some calibration software.
(The gamma.exe program that I wrote turned out to work on everything but the overlay - so not at all helpful.)
toxotis - yes, it's permanent. Once you download it, you can power-cycle the projector, and the change is still there.
Oh - one request. Any DLX650 owners that use Powerstrip with a 1.85 or 16:9 screen, and have good settings, please let me know!
Mike