If you are thinking that the Bund tends to lead the Bobl &/or Schatz/Eurostoxx then I don't think you really have much of an edge here. Just about anyone who trades Bund or other Euro F.I. futures learns this in the first 5 minutes of playing the game.
No, I dont. One of my algos is missing contracts where it didnt used to - it happens. Its a good thing I've been "playing" the game" longer than 5 minutes.