Do sysex w/ rtmidi or rtmidi-python

Correction: ignore_types(False, False, False)

Standard midiin and midiout objects are not fully collecting and sending all data

If you are looking for a midi thru function rtmidi has a flag allow_types(false, false, false) which allows extended vars, this may not make sense if this but i got python to back ya, rtmidi is very common acrossed the board linux and mac os + windows: check this python script, problem is probably lack of constructor vars w/ more arguments and jacks lack of handling hardware IO https://github.com/8888clockradio/iridescentCoconut/blob/master/beatstepUSBtoSPDSXsoftwareThru.py