Dave,
Thanks for sharing your experience about using an Accushift RD with a DA brifter. Guess that the Accushift ratios are the same as 740x DA or reasonably close.
Sometime in the future, I'll probably give it a try. Bike isn't set up right now. Had it with a 9 sp DA brifter & RD-7400, shifting 8 cogs. When I put it back together, I'll try to swap in the Sprint RD and see if it also shifts 8 speed.