Before making any edits, skim through the Java, checking it seems to implement all major areas of the desired functionality. Remember: there's no diff/patch merging of new generated code into hand-edited java like there is for the conf files. If there's a mistake in the conf files, it's best to find it before you edit the Java.
If the default value for a Pulldown is to be computed separately to the PulldownItems, and should be matched against the displayed text, the arguments to fillSelect() need to be edited. (See the Javadoc.)
The skeleton Java should have "TODO" strings identifying pieces of code that need attention. Check each of these.