Before my ENT was going to perform the surgery, he wanted me to do an experiment involving elevation to see if my ears were able to pop and adjust. After going up about 8000 ft in elevation, my ears were able to pop. My ENT also took an MRI scan of my ears and didn't see anything odd. He then decided that the ear tubes weren't for me. He's now sending me back to my TMJ doctor and it looks like I'll have to do some jaw surgery instead. I'm not really sure if this will fix it but it looks like it's my only choice now.
About the ear tubes, I'm not completely sure about the fluid issue. From what I've read, if you already have a lot of fluid behind your eardrum before the surgery, then the slit will allow it all to come out. Then after you get the surgery, you have to prevent water from getting in your ears. I'm not positive if fluid will permanently stay out of your ears once the slit closes up. I think if your fluid issue is also due to clogged sinuses and other issues, then it might be best to take care of underlying problem instead.
I hope this helps, and sorry if it's not the best information! lol this stuff is all so confusing. There are so many things to worry about, like your slit not closing up for example. I think in most cases the slit does heal so I wouldn't worry too much about that! As far as the healing loss, I heard that after the surgery it seems like your hearing is worse but after time I think it mostly recovers!