Whilst Model Based Testing (MBT) is an improvement over manual test specification, the leap from it to MBT can be hard. Only recently MBT tools for Web applications have emerged that can recover models from existing manually specified test cases. However, there are further requirements for supporting both MBT and manually specified tests. First, we need support for the generation of test initialization procedures. Also, we want to identify areas of the system that are not testable due to defects. We present Form Tester, a new MBT tool addressing these limitations. An evaluation with real Web applications shows that Form Tester helps to reduce the time spent on developing test cases.