stimpy_gr

I have a X50v with wm5 a02 and a Realtek BT GPS. I use a number of GPS program chief among them Destinator. Destinator works fine but, Pocket Streets, Google Maps and GPS tuner don't work as they cannot seem to connect to the GPS unit. I have set the GPS applet in the settings/system section to:
GPS Program Port:COM4
Hardware Port: COM8 (agreeing with the bluetooth port and used in destinator)
Manage GPS automatically selected (although the problems persist when this is deselected).

Am I missing something, is there an NMEA/SiRF setting I am missing or something?

Any help would be gratefully received.