disk cross wheels

[4crosswheels]

hi guys,
im struggling to get the spokes the right length for this build im doing for a client,they are alpha no tubes rims on A2Z mtb hubs could anyone enlighten me to the correct lengths of spokes as Dt swiss calc has sent me the wrong ones.
Bruce

[StradaJon]

This calculator works well - http://www.wheelpro.co.uk/spokecalc/

if the lengths it provides are the same as the DT Swiss one then double check the hub measurements and the ERD.