Sorry, but I must disagree with you moo-mop.
NOTHING in bow dynamics says that one cannot tune an arrow at any length provided it stays on the bow while drawing.
The "flying funny" you refer to certainly would be due to an "untuned" arrow.
If your Berger button, your drawlength, the spine, the bracing height, the point (pile) weight, AND arrow length give you a "tuned" arrow then you are ON. There are enough variables to make your life miserable if you DO NOT use them, but if you do, there you go.
The problem with cutting arrows at a predtermined length and THEN starting the tuning process lies with your wallet
An arrow almost never is too long, but too short is a huge problem.
There is no problem with having an arrow that protrudes 2 or 3 inches from the front of the bow.