Ah, cool a mormon I can ask questions of.
I am Jewish by birth and a kohain. I am constantly pestered by mormons re: this. What is the deal?
(I don't ask the pesterers, as the fact that people show up at my door knowing my geneology creeped the Hell out of me. I turn on the sprinklers when I see them coming.)
We Mormons hold Jews in great esteme....we consider them 'cousins' of a sort. You will find no greater pro-semites in America.
We strive to love all men....but some make it tougher to do.
Thry're some pretty strict restrictions on who is (or isn't) a Kohain. A very select group which is an inherited status. Aren't you now a Christian?