Same problem on my HD25e. Did you ever figure this out, Alex?if I turn off the projector and back on then the CW index setting is changed back to original settings.
It's been three years since you posted, and no responses. The solution must be either obvious or non-existent. I'm hoping it's obvious, but I don't see any "save" command on the service menu. It's really annoying to have to re-set these values every night!