RE: lab wont retrieve birds all the way to me
First of all, Are you following a sequential training program? If not then it will be difficult to diognose your problem. However that said, one temporary fix you could try is when training in the yard with bumpers toss one for him and when he picks it up start jogging AWAY from him. This will intice him to chase you. (never chase a dog, they will run away from you. instead get him to chase you) when he gets close enough grab his collar and tell him what a good boy he is. Love him up and don't take the bird/bumper away immediately let him hold it for a few seconds before you take it away. and always teach a release command such as "drop" it makes life much easier.
NEVER scold for not coming to you. that will teach him that it is better to be our of your reach then within it. By your side should be the dog's safe spot.