if your broadheads are afecting your arrow flight the first thing you should do is if you are shoting a 3 blade fixed broadhead make sure your vanes or feathers ar lined up perfectly with the blade on the broadhead if they do not line up put a little bit of heat on your arrow were the insert to losen the glue and the insert will teun so you can line it up once you have it lined up dont shot it right away give the glue about an hour to re harden it works great.
This statement is an old wives tale and is totally bogus.
For example how are you going to line up 2 or 4 blade heads?
The trick is to have zero wobble with a broad head attached to check for wobble use a spin tester.
The advice on 5shots web page is true and correct after all he is the broad heads guru on not only this forum but many others as well.