one dropdown gets correct value but the other dropdown reverts to default

I have two drop-down lists that get loaded and a default value from db - I do it in the Page Init event (did it in the page load too but changed to page init based on some research i did on this topic). then when I retrieve data from database for a particular item and setting a selected value of each drop down list, I see the correct value set in one of the drop downs but not the other. to be specific, ddlEcsrowService gets the correct value set from the BindListingDetails, while ddlListingType reverts back to the value set in BindListingTypesDdl. Any suggestions? thanks in advance. code is below:
====================== create.aspx
<asp:DropDownList ID="ddlEcsrowService" runat="server" Width="258px" EnableViewState="true" AutoPostBack="true" > </asp:DropDownList> <asp:DropDownList ID="ddlListingType" runat="server" Width="258px&quo ...