Question on dog training(my yellow lab)

[matt1118]

I have an AKC atta boy yellow male 8 months old, he has about 28 field trial champs on *his sire's side and about 26 on his dam's side. He has senior, master, junior hunters all threw out it. He has the brains for the training. I have him doing all the commands I give him. He will sit, down, off(lay down), find it(search) like for a treat in high grass or blood, he is learning heel. BUT..........his name and come is like I am not even talking. Whats ya'll suggestions.