Question re: DMK2IMD

I'm attempting to convert a TRS-80 DMK image to ImageDisk format in order to write out a real floppy. The original was 80-track, DS, DD and indeed the sdltrs emulator concurs and can catalog the image without incident. The DMK2IMD utility converts it without complaint and reports: 80X6400 DSMD 250k data rate assumed But, when I fire up IMD and write it out things stop after track 39 and tell me that 2880 sectors have been written. That's the correct number of sectors, but they should be spread over 80 tracks. Clearly I'm missing something, but am not sure exactly what. The drive is 80-track DSQD and data rate is 250Kbps. I am not set for double-step and imd believes (correctly) that the drive is an 80-track unit. (I have also tried this with a more common 5.25" HD 1.2M drive - using 250k-->300k rate conversion - but the same thing happens) Steve --