It's a while since I've been on but just to let you know I eventually had fitted a bigger sunroof one you can fully open and shoot out of it took the rear aperture to be enlarged for it to fit its manual 2 handle open or close and it locks happy days
I have a similar issue my disco 2 will start fine after reversing off the driveway and putting gear into forward drive the M and S start to flash aswell as the D I have to put my foot down to get it to move forward after 200 yds or so I stop...