ChronoGrapher add-on: help please.

We found the way to show events on the same line. It is implemented in Simile Timeline and it is just required to add get/set methods into vaadin wrapper:

class TimelineEvent()

public Integer getTrackNum() {
return this.trackNum;
}
public void setTrackNum(Integer trackNum) {
this.trackNum = trackNum;
}

Now we have the main issue with Chronographer integration into our project – out of sync on all browser excepting IE.
According to Quick Start with ChronoGrapher (using maven) it is required to replace ApplicationServlet by ChronographerServlet and ChronoGrapher does not work at all with regular ApplicationServlet.
<!—
com.vaadin.terminal.gwt.server.ApplicationServlet

org.vaadin.chronographer.ChronographerServlet

Maybe we are wrong but we think that out of sync can be caused by ChronographerServlet.
We have big vaadin project and would like to add Chronographer on the one of the tabs. And it is not good to replace servlet for whole project if only chronographer requires it.
Please write why you decided to implement ChronographerServlet? And could you please clarify if it is possible to use Chronographer in vaadin project with regular ApplicationServlet? Maybe just some not complex modification is required. Please advise where to modify.

We would be very grateful if you would reply us at an early date. We have little time for decision to use Chronographer in our project or not.

Thanks,
Leonid