Jim Brumby - additional engineering (tracks 1 and 2)

Young Guru - additional engineering on "Lost+"

In 1998, Tim Gerak was added to the core member line-up, playing guitar and also credited with additional engineering on the band's later recordings.

Danny Evans - additional engineering (tracks 2, 3, 8, 9, 10 & 11)

Multitrack mastering, additional engineering, and mixing on track 1 by Greg Reely.

Dave Bryson - additional engineering, mixing on "Coming Around"

Todd Collins - additional engineering on "See Through"

Reid Waltz - additional engineering on "See Through"

On Hilary's album "Through these walls", he is credited with playing bass, guitars, and additional engineering and arrangements.

Blinman also recorded and mixed the album, with Brahl assisting with additional engineering.