D1 = 7.6mA (probes on D1 and 5v power supply)
The MIDI OUT DIN pins 4,5 = 4.5mA (is as high as it goes).
This is without the led inserted into the MIDI DIN. I guess my thought is that, according to what I've read, MIDI operates on 5mA to 0mA. The MIDI OUT spec only shows 220ohm resistors on pins 4,5 respectively. So where am I losing .5mA or how can I ramp up the mA? be gentle.