Thanks everybody for all your insights, I appreciate everybody's advice and help.
Yesterday, I repacked my front/rear hubs but as I feared, I could NOT get the adjustment done due to the axle moving. After 30 mins, I gave up
I don't have a vise and am not able to get one (I am basically working in one of my room and I have nothing to set a vise)In this article, I found that this guy actually adjusts his cones with the wheel mounted on the bike. Do you think that this method could help holding the axle in place ?
(see bottom of the article www.cyclingnews.com news and analysis)