Hi, wouldn't you use pull-up range from your loft calculation as release range in the WRCS? Its the distance at which the WRCS will trigger the pull-up timer. I believe the weapons delivery manual calls for adding 1s pull up timer so you have a moments notice - so need to add 1s worth of distance to release range.
also, aural tone volume is now set to zero on cold start, not sure if that is the source of the beep?