Just set off building a wheel for one of my lads for xmas and run into a possible issue.
Rim is a DT Swiss EX511 which has come with concave washers and their own 2.0 15mm nipples, spokes are 14g Sapim from Tarty and they thread ok but get tight very quickly.
I've only just threaded them lightly by hand but I'm not happy with how they're binding, I assumed they'd work fine but could the thread pitch/diameter be slightly different?
Will I be ok to use the Sapim nipples with the washers that came with the rim?