Thanks, you guys, for your great suggestions. I have attached a pic of Ahab with saddle, but there are a few things different... DSC_1363.jpg
... Such as, I saddled him quickly for a photo but did not ride; normally I put the saddle farther back, not up on his withers like that. Also, I have replaced the Navajo pad with a thick 5-star wool pad, and the neoprene girth with a mohair "Y" girth so now there is a buck strap, of sorts. the fit has been checked by my farrier and by my vet, neither of whom are probably that proficient in it. I also sent of tracings to the guy who built the saddle, and he said it would be the saddle he would have made for Ahab. All that being said, I can't help but agree that it might be pinching his shoulders. Also, I am having a chiropractor out, for sure. Finally, I think a second horse may be in order...
Dream on, dream on.
But, another best thing about drafts is how they make you laugh. I was at a local show, and a woman on a HUGE Percheron cross (beautiful) was up to jump next. They went into the jumping arena, the gate closed behind them, and the Percheron took one look at the jumps, turned, and calmly walked back out of the arena, right through the gate... broke it into smithereens, and didn't even slow down. He slowly walked over and took his old place at the ringside, like nothing had happened. No hysterics, just determination.