I roll the Shaft on my Kitchen CounterTop, Until I see a High Spot. Then I hold the Shaft and Elevate it with a Kids Trapazoid, A Rectangle with Angle Ends,
ALL while Holding Onto the Shaft, Keeping My Eye on Where the High Spot Was.
Then Roll The "Ace Roller Straightener"
Over the Bad Spot, Over & Over Until You "Think" it should be Better. Then Roll the Shaft on the Countertop to see if I Fixed it, or Made Another "High Spot". I Agree "Practice is the
BEST Teacher"!!
You will get the Hang of It,
GOOD LUCK and Be Patient,
Patience is a
BIG HELP As Well!!
You will wonder how you Couldnt Do It Before!!