Sadj_gamma = ( prev.Sadj_gamma*prev_scale + next.Sadj_gamma*next_scale);
Sadj_lo = ( prev.Sadj_lo*prev_scale + next.Sadj_lo*next_scale);
Sadj_gamma = ( prev.Sadj_gamma*prev_scale + next.Sadj_gamma*next_scale);
Sadj_lo = ( prev.Sadj_lo*prev_scale + next.Sadj_lo*next_scale);