Am I missing something regarding the price? The website link suggests that the Mitis Dama retails for $999 while the Dama Race retails for $1699. (Both come in pink)

Good advice to consult with your LBS in any case. Stems don't come much shorter than 80mm, and it sounds like your current fit definitely needs some tweaking. At 1500 miles, you've given it plenty of breaking-in time.