To my knowledge, Donchian also used a subtile variation of Donchian bands, introducing the average of Upper and Lower band.
I would need the following EA, if you pleased:
Add to the standard Donchian Bands (40), the moving average (10) of both Upper and Lower band.
At last, use another MA (20) based only on price, and take the crosses:
if moving average (20) crosses up MA(10) go long.
if moving average (20) crosses down MA(10) go short.
Thank you for your patience...
PS: If possible, I would like you to post the indicator (of donchian scalper) modified as I'm asking you.