If you can get Jim for $50.00 an hour including birds. That would be money well spent.
It sounds to me that you have a collar wise dog and you need to go back to the basics of training without a collar. That is the problem of training from the beginning with a collar on. You only have one that listens when it is on.
Collars are a great tool to use for proofing after your dog has been taught through corrections, praise and repetition. One should have a verbal, visual and
possible whistle command before ever putting a collar on and it should only then be used for recalls in the beginning stages of use..