After running my Rhino on the ground for about 5 minutes with the vent plugged,I attatched the red tags to the smoke and K1 vents.The rhino never did quit,when the vent was opened up I could hear the tanks crackle back to their original shape.I made a checklist also.Its hard to believe how long the checklist was.We do more then I realalized getting ready for flight.If I was flying I am sure it would have ran long enough for me to get airborne,and quit at the most inconveniant time.