Leveling the frets along the lie of an unleveled fretboard is NOT fret leveling. No luthier or fret technician would ever do that. If you don't first level the fretboard, you will have leveled the frets based on a convex or concave neck (up or down neck bow). That's not a good thing. There are just too many anomalies with the TG kit for anyone who understands fret leveling/crowning to approve of it as a valid process or valid tools. If you think the TG process and kit work well for you, yer in for a huge treat when you use the right process and tools.