Nebulizer Malfunction

I have a Pari LC Sprint nebulizer that I purchased earlier this year. I've changed my neb cup as recommended after 6 months. I neb with 7% saline on a daily basis and clean parts after every use by rinsing them thoroughly and soaking them in a solution of hot water and Dawn. I also use microwave sterilizer bags every few days and soak parts in a 1:1 solution of water to white vinegar once a week.
However, I noticed, over the past couple weeks, that the mist in my neb was delayed and took a long time to get up to the level it had been originally.
I called Pari and the tech informed me that saline tends to clog the neb cup and the only way to correct it is to boil the parts for 5 minutes. She said sterilizer bags, vinegar and soaking are not enough. And, here I thought I was being so diligent!
I figured I'd share this in case anyone else has this problem. Lesson learned. I will now boil my parts! The tech said doing so every 2 to 3 days should work.