To those of you that run belly and will use an XB scheme vs. a 3 technique to the playside, how are you breaking down the Cross Block between the Guard and the Tackle?

This is something we really struggled with on our Belly play (and Down, to boot) and I think can be traced back to our footwork for the playside guard, we are having trouble getting him on a good tight angle into the hole. Too often he is pulling flat, not into the hole. With trap, we don't have a problem as we tell him to point his playside foot to the centers playside toe, and we are on a good angle. However, if we do that with Belly (or Down) we end up running into the PST on his trap block (because we are all on the same level).