Too late. Once they start making noise, the damage is done.

When you lift a vehicle it puts the CVs at a sharper angle (they don't like that). It's not uncommon for them to act fine but as soon as you lift - instant noise. It's almost as if they've broken into a normal wear pattern and when you change the angle they begin moving outside of the broken in pattern and make noise.

I didn't notice my torn boots until the noise started (I guess I don't spend enough time under mine). I gambled and just replaced the boots and overpacked the joints with grease. It didn't work. I should be ordering the new axels tomorrow & I'll let you know how it goes.