I don't think you can say there is a norm. Some people have a life and need to catch up after getting the PVT. Some folks are out of money. What are you getting the training for? You can't get the COMM till 250 and if you got the PVT at 70 hours and puttered around for 100 hours before you started INST training, what's the difference - unless you crash "CONTINUED IMC." Just saying do what works for you, there's no one way of doing it.