Also, maybe you are being really hard on your self about spoken grammar. Hearing people break it all the time and bend it this way and that way. As long as people understand what you are saying, then who cares if you break all the rules or if the words with lots of syllables are mispronounced? Just about every deaf person mispronounces something because English is such a funny language and very inconsistent, but people usually know what you mean. I agree, communication rather than correctness is more important.
So funny R2, I've been listening to books on cd in my car on the way to and from work. Now I'm hearing words pronounced differently then I have pronounced them. And many people around me pronounce them more like I do, so I'm thinking it has something to do with regional differences, who knows.