Ticks per unit issue

Hey hey,
I imported a MIDI file into midish. The resultant midish file shows
ticks_per_unit 1536
tempo_factor 256
meta {
   timesig 4 384
   tempo 37500
}
at the top. For a project with a tempo of 100bpm.

Synchronised to Midish's internal clock this is fine. Synchronised to an 
external clock the tempo is VERY slow, about 1/16th to 1/20th slower. I can't 
really calculate the factor. It's not 1/16th exactly nor 1/20th.

What can I do to fix the song to use 24 tick per quarter or how can I 
correctly change the tempo of the external clock source to correctly generate 
100BPM inside Midish?

Many thanks for any hints!

Best wishes,

Jeanette

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