[EastAngels2014]

So i am doing a hybrid with a gamma progression II and i cut the poly at 20 feet and went all the way though and ended on the last main but didn't have enough string to reach my crank so i couldn't tighten it. Is there a way to fix this? And if i measure out more than 20 feet do i just have to throw away the other half because it will be to short to do the mains on the next one stringing?