Hub Maintenance on Mavic Kysrium

i have an older pair of mavic kusriums (about 3 -4 years old). i don't think that they roll/spin as well as they should....do i need to do anything with the hub/bearings for maintenance to make them spin faster/longer? if so, what needs to be done? is it something that i should take into the shop, or is it fairly easy.

thanks for your help!

Hi. They should spin well. Take them to a good road oriented shop. They'll know and will be(should be) able to do the job for you.

i just got a cervelo soloist that came w/ easton circuit wheels. you think i should go w/ the eastons, or get my ksyriums worked on?