Hello everyone, saw this thread and figured maybe someone of you knowledgable people can help me. In the SB 706B it says that you can either make the support plate yourself, or procure a 60764-02 or 60764-03 Support Plate. However, it also says that for the Vero Beach Super Cubs (S/N 1809001 to 1809057 - mine is one of these), you can only use the 60764-03 Support Plate. Univair has the 60764-02 plate, but where can you get an 60764-03 plate? And what is the difference?