by Richard Evans » Tue Mar 10, 2015 5:24 pm
You need to set the reed further out. This flattens the whole scale but affects the top much more. Find the best compromise position at which as many of the octaves as possible are close to being correct, regardless of overall pitch. Get low/high G right if nothing else. Then see where you are with respect to the reed position and the actual pitch. This will give us some idea of what's going on, if you let us know what the results are.
On our own chanters, the tip of the reed is typically 31mm from the top of the chanter, and 82mm from the centre of the top G thumb hole.
If you use the Ross/Nelson "usual" chanter scale and a reed made to the correct dimensions and pitch, and thinned to crow at the right pitch, you shouldn't be far out even if you are not spot-on.
There's a sound file of the crow of a reasonable reed in the reed making section of our website BTW.