Madfloyd. The Ebony is brand new and is not broken in. Maybe only 2 hrs on it so far. That said, it does everything on a bigger scale than the 20XL and has a better separation of instruments. But the 20 XL is indeed a good cart and doesn't need to apologize for its performance when matched against the Ebony. The Ebony is a better cart without a doubt. But is it 5 times better? probably not. Then too, the Ebony is not broken in.
That said, I have never heard anyone say bad things about the Shelter cart. I've heard of others who are using it on the Sig 9 arm with great success. I doubt it is the VPI sound that is the problem. I doubt it is an arm/cart mismatch. I also doubt it is a setup issue. Even so, I'd still check it.
FWIW, with my bad Benz cart, some albums sounded good while others that I knew were recorded well sounded very bad. I'd send the cart back to have it checked.
That said, I have never heard anyone say bad things about the Shelter cart. I've heard of others who are using it on the Sig 9 arm with great success. I doubt it is the VPI sound that is the problem. I doubt it is an arm/cart mismatch. I also doubt it is a setup issue. Even so, I'd still check it.
FWIW, with my bad Benz cart, some albums sounded good while others that I knew were recorded well sounded very bad. I'd send the cart back to have it checked.