@saddlesores
Thanks for the input; I'm sorry I didn't clarify, I don't have disk brakes; I use v-brakes but just haven't mounted them yet (though the fork can mount disk brakes too, could this be the issue?).
I was under the impression that no dishing is required for front wheels, still the wheels are not really that great (the bike is a decathlon rockrider 5.1 - so very low end - and the wheels are stock).