Sadly I wouldn't get your hopes up.
After my surgery I had questions about what I was feeling, especially the very audible and very feeling-related "click" I had inside my nose a couple days after my surgery. After it happened I started getting this sensation of numbness in my nose to this day.
Both my surgeon and his PA were like "it's nothing, there's no way anything could have happened related to that part of the surgery." My surgeon when I pressured him on it gave this pained, almost exasperated look, saying it could be a pinched nerve, everyone's body is different, yadda yadda.
When you come back to a surgeon with pain and discomfort, what they're afraid of is a botched surgery, something they did wrong. So they are very resistant to giving hard answers; they like to talk in generalities and success and re occurrence rates. My surgeon even flat out said at one point "Look, what I can tell you is that out of 50 of these surgeries, 45 people had no problems." Once they've cut you they don't want to drill down in to your specific case again until you can point to a real medical problem (not that any of your symptoms aren't real in my book.) They don't want to and can't admit any degree of fault because that opens them up to a lawsuit, so they are very very careful when former patients come back with questions about their recovery or lack of it.
So you can consider going to another specialist who has no current stake in the game (i.e. he can't be sued for telling you what he actually thinks.) But I wouldn't expect much satisfaction there either, because even if he tells you "yeah they fucked you up good", the best they can do for you is schedule another expensive, painful surgery or point you to a good malpractice attorney. And neither of those get you feel better sooner.
Welcome to why people hate doctors. They project confidence about procedures but for various reasons people feel unsupported/left out in the dark after the procedure. If we were all swimming in money or we had actual healthcare in this country, doctors might be more willing to spend time with patients, listen to their post-op and recovery problems and not be so quick to dismiss their pain after the surgery has been done and money has changed hands. But as it is, if you survived your surgery and something hasn't gone catastrophically wrong since, most doctors and surgeons put it in the realm of "average expected outcomes" even though it feels nothing like average to you.
The only advice I can give is, if you want the guy's sincere help maintain your cool and don't stick your phone/tape recorder in his face because he will immediately stone wall you for his own professional safety. I basically had to pull this trick in reverse one time when a hospital wanted to discharge my mom even though she was in no condition to be out on her own. I had to demand a doctor's name from him who wanted to discharge her so I could "know whose name I could give to the newspapers if something were to happen to her." That got me compliance pretty goddamn quick. In your case I think you need to play it the opposite way because he's under no real obligation to give you more than he has at this point, as much as that sucks.