Give this a try... Print it out and take it outside with ya when you are tuning. That way you dont have to remember or keep going back inside and looking it up.
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FLIGHT TUNING
To begin flight tuning you will first need a large enough back stop to make a cross that is 10" in size.
With a level , Make a horizontal line through the center and then another vertical line through the center of the horizontal line.
Make the line large enough to be visible from 30 yards but not overly large.
Start at 10 yards from the target.
Aiming at the Horizontal line , adjust the sight so that you are hitting the line.
Now move back to 15 yards. (50# and under)
Using the same pin , shoot at the horizontal line.
where is the arrow?
if it is high then adjust the rest down 1/32" at a time until the arrow hits the line again.
Now move back to 20 and shoot again using the same pin that you used at 10 yards (50# and over)
Adjust in the same manner as you did at 10 yards. Move back to 30 and again shoot the horizontal line.
Make adjustments as were done at 20.
Now you are ready for vertical tuning.
Moving back up to 10 yards aim at the vertical line.
and adjust the sight to hit that line.
Move back to 20 yards and shoot that same line.
if you are left , move the rest to the right.
if you are right then move the rest to the left.
Move back to 30 and again shoot the vertical line.
Make adjustments as were done at 20.
You are now rough flight tuned.
This tune may be right on for your broadhead but you must finish with a broadhead to know for sure.
Repeat the horizontal and vertical line shots at 20 and 30 yards respectively.
Adjust the rest as necessary to make the arrow hit the lines.
A broadhead is a great fine tuning tool and will allow those with less than perfect form to better flight tune their set ups because of the exaggeration that the broadhead will cause when tune defects exist.
Before you begin shooting, you will need to check your broadhead equipped arrows.
After installing your broadheads, make sure they are perfectly straight on the shaft.
This can be done by spinning the arrow on a flat counter while checking for any broadhead wobble.
You can also use a commercially made spin check tool.
Below is a graph that explains flaw and correction methods

Curiosity killed the cat, but I was a suspect for a while......