My BR started out looking a little smaller than the Golden SL... and they were just SO attracted to picking at the GSL!! I think you're doing a great job by keeping them all together and yet separate. The wire is an EXCELLENT way to keep them used to each other. Keep it up!! Maybe the next time you try, you could put them together after they go to "bed" for the night... I hear that waking up together seems to help them get a long. On the other hand, if they don't, you won't be there to help. Don't give up though!! EVENTUALLY, things will work out.