This is what I get below with No Lead In or Ending.
Not sure why it's starting on 29, you have got a Sync offset you can try setting to -28 ?

You try include Lead In and set Reaper > File > Project Settings > Project Start Measure > - 1

ReaScript to Import SGU MGU Chords to Reaper > ReaTrak-Biab-SGU-MGU..-to-regions-ab.zip
ReaScript Chord Sheet for Reaper > ReaTrak region chord sheet editor.zip

Zoom++