Still havent change my rear spheres and it is as much as driving a lorry now

it is very bumpy on my rear. But the rear sphere's age were only a year and a half and as far as i know it usually last about 3 years per sphere?
i've checked the accumulator sphere ticks and it is 5 seconds per tick instead of 30seconds. is it possible the accumulator sphere could damage the other spheres?
BTW, there are LHM leaking when i park my car. when inspected at workshop, the mechanic (more to alfa romeos than citroen

) said it could be a crack on the housing of the main sphere, but ive contacted a citroen ex-specialist

and he said it might be the rubber seal or something that need to be replace. have anybody ever had a *crack on the housing?
thanks in advance.