The DTS 2.0 german soundtrack has some problems at the beginning; so I used the PCM mono german DVD track to replace the problematic part; however, the original theatrical soundtrack was mono, so the DTS 2.0 was obviously a remix... as I wanted all soundtracks to be as close as possible to the original version, I converted it to mono too; also, french, spanish and italian soundtracks were of lower quality in comparsion, so I preferred to lower the quality of the german one to be on par with the others - including commentaries... I left only the english soundtrack and isolated score from the laserdisc in PCM, as they are the best in quality.
This is my personal choice; however, if someone would like to obtain the german DTS 2.0 soundtrack to mux it with the final project, post your request here. Or, everyone is free to mux another multichannel soundtrack, but IMHO the original gritty and harsh soundtrack is the best option! (^^,)