Mavic SLR wheel failure

seanwilliams158

During this year's Marmotte my new Mavic SLR rear wheel had two spoke failures. Both on the block side, metal spokes just breaking. ( the left hand spokes are made of carbon ) I am 88kgs and it happened both times whilst climbing. I managed to limp to the Mavic support vehicles and they fixed the spokes, but the second time i had to decend Galibier all the way to Bourg D'oisans with no back brake, and severe buckle.... can anyone shed any light on this ??