Ultegra Open Pro spoke question
I have a pair of Open Pros that were taco'd in an accident with a car, I want to buy new open pro rims and spokes and build up some new wheels with the old Ultegra hubs.
I bought the wheels new and they were already built. I have removed some spokes from the damaged wheels and measured them and they are different sizes to what the online spoke length calculators recommend.
Can someone please tell if I am measuring from the correct part of the spoke?
The spoke sizes I have when measuring from here are front 294mm, rear left 293 and rear right 291mm.
Online calculators recommend Front 296mm, rear left 296mm and rear right 294mm.
What size should I get?
Open Pro rims on Ultegra 6600 hubs.