Rich- nearly all of the fallout came off, only when polishing the car did i notice tiny bits i had missed, i cut the clay bar into 2, towards the end it started to come to bits but i was just about done so i didnt get the 2nd half out.
took me about 3 hours to clay as it required a fair amount of rubbing to remove the fallout, the bonnet and passenger wing were by far the worst areas but there was small amounts around the rest of the car!
other than that the clay didnt look marked at all as the car didnt hardly have any tar etc on it!
after polishing the car then using the instawax the paint looked great! was gonna take some photos in the morning but i have firework powder all over the car now some how!