Lotsawa

We want to use 2 MZ-NH700 for digital recordings. The source is analog (mic mixer or cassette player). It's annoying that the recorder inserts track marks whenever the recording level is low, e.g. during a moment of silence in a talk. When I transfer the recorded material to my PC (using SonicStage), all these tracks become small files. But I need one large file. So is there a possibility to set the recorder in such a way that it won't insert track marks automatically each time the recording level becomes low? Thanks.