AFAIK the "Not in timely fashion" error that you may see when getting the Service Control Manager to start the service is because the script did not notify the Service Control Manager of successful start up before a timeout.

I also see this when I have errors in my script. But of course I test them before I load them as a service..;) well not always... hence that error message.

What I think you will need is the following

} elsif( SERVICE_RUNNING == $State ) {
        # The service is running as normal...
        system('net send 127.0.0.1 Hello');
        sleep 5;
} else {
        # We have some unknown state...
        # reset it back to what we last knew the state to be...
    Win32::Daemon::State("$PrevState");
        sleep( $timeout );
    }
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