Try Wilson Super Ink. They all "fade," as you put it. Regardless, any ink will have limited adhesion to any non-porous surface. It will get on the ball. That is the way it is. Re-ink or if you play enough, and hard enough, you'll have to restring, anyway.
Still with the Head LM Radical MP/OS. The dying art of the 1HBH. Gamma X-2. Would a higher-end machine get me more forum "cred"? ;)