Please please please stop putting capital letters at the front of every word you type, it makes is so hard to read.
I second this.
Here is how I get a horse used to the girth. First a saddle pad and rope snugged up around the girth area, just enough to hold the pad on. They usually don't respond much to this if you have desensitized properly. Then a surcingle. I do this one on the lunge line or ideally in a round pen. Snug it up enough to keep it on, send them off for a lap or two at a trot, then snug it up again, and move on with whatever you were planning to do. If they buck, ask for immediate direction changes to stop the bucking. If they try to stop, rear, etc, ask for faster forward motion, in no uncertain terms. At no point are they allowed to misbehave with tack on. You really want to reinforce that out in the pasture = play time, time with human = time to do your job.
when they go well in a surcingle, move on to the saddle. In the case of all the horses I've worked with, this is in a couple sessions, some times only one. Get the horse used to the saddle going on and off before cinching. Like I do with any horse I ride, I tighten the cinch enough to hold the saddle on, bridle, walk the horse out of the barn to wherever I want to mount or train, then tighten it enough to get on and ride. Job done.
the thing is, a horse will do whatever you let him do. In your case, he fussed with cinch pressure, you let him fuss instead of making him get on with it, now he fusses all the time. I could fix this horse in 15 minutes, and I'm no great trainer. You could too.
STOP treating him like a friend or child. In your other post you described your relationship as being like mother son or 'besties'. These ARE NOT healthy relationships for a horse and human to have. Horses are not humans, they are a prey animal that lives in herds and craves leadership. You are a predator.
For this relationship to work, you need to a) learn to read horse body language and understand them. Turning to kick = total disrespect. Sucking on your hands like they are a mares teats = disrespect(and weird...), being turned out for days in a grassy field with nice clean water and no work = vacation, yay! And;
b) learn to be a leader, and a good fair one. Give the horse a job. When you say "go" or "stop", mean it and make it happen. Strive to be the type of leader your horse wants to follow.