Tried different caps and resistors, earthing it to breadboard. nothing really worked, some of it made it worse. It may be an issue with the circuit being open on the breadboard.

I've moved on to double check the PCB with the multimeter and populate the pcb!!!

Quick question though as you can see on the silk screen I can identify, G for ground, In and Out and the LED....but what is "L"? its got me stumpted