Two videos about the choices to be made about tuning your smallpipe chanter.

(if you're going for a 'great pipe', English, Highland or Border, then you don't need to make these choices, since your chanter is conically-bored and will play these notes jusing special fingering patterns)

The first outlines your options

Part One - The Leading Note

One solution I can offer to avoid this kind of choice is the 'tuning-ring; this video explains how it works

Part Two - The Tuning Ring