There are some medical studies that question the efficacy of treating mild OSB sleep apnea with CPAP or APAP. "Mild Obstructive Sleep Apea Should Not Be Treated" by Michael R. Littner, MD. Journal of Sleep Medicine, 15 April 2007 ABD. It is available on the National Institutes of Health website.
Here's a tip about reading medical studies. Be sure to check and see if they are funded by or otherwise connected to corporations. This information will be in the Disclosure Statement. If they are connected to corporations use the information they present with great care.
I have the same problem. I am a retired Respiratory Therapist who worked in Acute Care for much of my career. Wet tubing that doesn't dry in a timely manner can be a serious source of infections. We used equipment driers that dried cleaned equipment quickly. That prevented the moisture problem.
When I started on CPAP I went on a search for an equipment drier and found one. It is called the Hurricane and is made by Seistamed. It cost about $165.00 but works like a charm. It holds tubing, mask, etc. with a timer that operates over 15, 30, or 45 minutes. It completely dries all my stuff in 30 minutes.