Crystal clear! It's been years since I've touched electronics and fancied dabbling with it again, but the two resistor thing makes entire sense after your explanation.
Thanks
I was wondering why some of the output LEDs are linked to two resistors and some are linked to one? ie R9 and R11 link to LED 5 but LED 6 only has one resistor connected to it.
Thanks
I found using a 1microfarad capacitor that the LED remained ON. When I changed to a larger capacitor it then flashed. I am not sure why this is. I have used the same resistor values as yourself and changed the chip twice.
Thanks