Advair Diskus Brush Teeth, Mycelex, Spiriva, Gargle, Inhaler

I have been put on the advair diskus 250/50 and have been on it for the past 6 months or so. I also take the Spiriva (which I love). The Advair diskus is the worst thing ever to be put on the market. most of the powder sits in your mouth and no matter what I do (gargle, brush teeth, take mycelex troches, and now on swish & swallow nystatin), nothing is helping. Whoever designed this diskus ibviously did not have the user in mind. Now I understand Advair just came out with the HFA inhaler so I'm thinking that most of the fine mist will go where its supposed to go instead of sitting in your mouth causing havoc on your tongue and back of throat. It is the worst of the worst. The pain is getting unbearable and am hoping i can get off it all together maybe.