If it makes you feel any better, my trans doesn't shift down to first either. I don't think any thing is wrong, it is probably just some electronic nanny trying to avoid drivetrain damage due to torque shock load. Have you tried lifting off of the throttle briefly? Or just climb it in first.
Not trying to hijack your thread, but how do you like the DT8000's? I have the 3000's on front right now, but they are way too soft for the dunes.
It's always darkest before dawn... so if your going to steal your neighbors newspaper, that is the time to do so.