have you tried abs slurry ?
when I used abs - before I came to my senses - some clear abs dissolved in acetone and painted on the bed really gave excellent adhesion.

But, I never managed to print abs without a using a raft.
And I've never used a raft with any other filament.

I did try a quick asa print the other day and yes - it too warps like a bastard.
But I will say ASA doesn't stink up the workshop like abs.

As was mentioned, magigoo is excellent and alittle really does go a long way.