Absolutely agree to minimally consider a second and third opinion. I had laryngeal chondrosarcoma and as a result of the cancer removal and reconstruction procedures I had a trach in for about six months. I found that excessive canula cleaning combined with 3 times daily doing a lavage really helped with breathing, swallowing and everything else. Moisture is another key which you appear to be doing frequently. Lastly I changed my entire trach on a weekly basis. My cancer did not require radiation so I cannot help in that regard. God Speed!