Just a guess, try .Value(YOUR_VALUE) in your chain
http://docs.kendoui.com/api/web/dropdownlist#configuration-value
Note:- Make sure to pass the ValueField and not the TextField in the .Value() property of Kendo Control as "YOUR_VALUE" has to be an integer property as .Value() accepts an integer and not a text property, otherwise it won't work, it won't show any error but it won't give you the desired result.