Losing creatine between my teeth, that's awesome!
I forgot to add that I floss a half hour after ingestion
I actually got that from anabolic minds and a few other reputable websites. I spoon 5 grams in my mouth then swish a full glass of grape juice to wash it down.
As per the dosage: You should take the smallest amount that results in a positive gain. By this I mean that if you find that 5 grams work - that is what you should take. Taking 10 grams will not produce twice the effect. Remember what you are trying to do is saturate the muscles with creatine. You are looking to boost your levels by about 30% percent. Taking addition creatine once you have reached saturation is just a waste. Whatever you don't use is just excreted as the waste product - creatinine.
*For the average person 5-10 grams of creatine powder is the right amount. Weight really has nothing to do with it and shouldn't be a deciding factor. It has to do with how your body distributes/responds to certain amounts of creatine. His body might need 15 grams to reach full saturation, maybe only 5.
My suggestion is to lower the dosage to 5 grams postworkout and see where that leaves you after a week. If you don't feel it's enough, try 10. When he said "for the last 2 days", it sounds like he hasn't done a loading phase, which I definately stand behind. The more you tell us the better.