DIY: Fret Levelling and Crowning on Acoustic Guitar (Thomas Ginex Kit)

I tried to fix the dents on the frets of my guitar. I used the Thomas Ginex fret refinishing kit.  I found out that when leveling the frets, the tool kit worked fine. However, when I tried to use the kit in fret crowning, the frets near the edge were not shaped properly.  So, I used a needle file to shape the frets near the edge a little bit more.