Originally Posted by DiapDealer
There's no reason to have both a <reference type="start" item AND a <reference type="text" item in the same guide section of an ePub. Choose one or the other. There's also no reason ever for multiple "text" reference types in the guide section of an epub's OPF file. I've seen some online "how to" guides that encourage people to make a "text" reference item for every single html file that represents the book's "Text." That's bum info ... in case you've done something along those lines.
I would also recommend making the desired Start Point the very first reference item in the guide section.
What Diap means is, your MOBI will goeth where you told it to go: the TEXT reference, not the START. ;-) Eliminate the start tag, and set your foreword to "text" and you should get the result for which you seem to be aiming. ;-)
And he's right, don't use TEXT multiple times, just use it for your desired "start" location.