Is it possible to have permanent mucus buildup and nose congestion after septorhinoplasty?

Hello, I had a septorhinoplasty 8 months ago in my home-country. I corrected the septum, but since then I have had problems with mucus, difficulty breathing. CT Scan showed mild symptoms of sinusitis and no irregularities in nose structures or bones. I have been seen by 2 ENT-s in Toronto and no solution at all besides the saline & steroid spray. I am also having issues with ears now. What should be the diagnosis? Thanks.