Heeling woes

It's SO unfair to compare one dog to another! I have to stop doing this. It never was a problem with Dusty and Shiloh and Blitz, but once I got Blitz I realized this was the dog that could do everything I ever dreamed of, and he loved Obedience with the same passion I do. Well, he's too ill to work or show now so that is that.
So I have Moto - the son of my beloved OTCH dog Shiloh - and I got exactly what I asked for: an intelligent, strong, CHALLENGING dog! While I love him with all my heart (he gives the best puppy hugs) this one does not love Obedience despite food, toys, play and all the positive work I've tried to do with him.
I shouldn't be surprised as I had to correct this strong-headed dog at eight weeks old - he was trying to be the pack leader! I've had to use some compulsion with a 4-month old puppy in training and it is VERY discouraging to have to do so. But, when a dog digs in his heels and refuses to move out came the microprong, one pop and he launched to bite me.
He's young and the battle was short. I think I made a good enough impression (I hope and pray) that I don't have to do it again. He did heel after that, and heel well, but not with the heads-up attention I desire.
We broke off, did some fun stuff (side walking, backing up, fronts, finishes, fast and dynamic) and I had to try heeling again. Moto ignored the food lure and off we went, with me vigorously praising as he was keeping pace nicely. Finally he looked up at me (food was at my eyebrow) so I praised and released. Off we went again, he looked up, I made sure we had a few paces with head up praise and release.
Does he understand THIS is what I want? That it is fun? I don't know yet. But at least, we are back to square one.
Good: he has good fronts (still puppy stage). He likes the swing finish. He enjoys the recall.
Bad: He doesn't like heeling. Mediocre on around finish. Terrible retriever.
Average: stand for exam, stays, utility signals at 3 feet
Let's see if we make any progress. I need to be patient. I need to be fair.