I seem to have discovered a consistent pattern bug in v0.37 firmware. The repeat count on P1 only plays once if its set to "1". This means rpt=0 and rpt=1 both only equal 0. Further repeat counts are also minus 1. So to play 4 measures you set RPT=4. All other patterns obey the rules of 4 measures being RPT=3.
Struggled for hours with track timing some 120 bars into a song and wondered why never of it ever added up.