Pulling my hair out at the min over buying an awning for our swift corniche 13/2 , we have measured the rail  its 785cm , been informed we should look for a size of 763 to 788 , we tried an 800 and it was five inches to big , does anyone know if an awning of 760 to 784 would fit our van ? , getting sick of some dealers trying to sell us an 800 after telling them 800 wont fit grrrrrrrr , thank you for any replys .

                                                                             XX Gill .