@poppadum Thanks for your help on this. it seems to be an issue with the driver board for the screen. purchased another board and this seems to fix the image size issue but has created a white line down the middle of the screen. It seems i have two faulty boards! Have emailed the manufacturer to see if they can help.
@poppadum ok so some more playing
by un hashing this line i got the resolution to show 1920x360 but it now pushes the image to the top of the screen
framebuffer_resolution_cmd = /usr/sbin/fbset -g ${global:marquee_width} ${global:marquee_height} ${global:marquee_width} ${global:marquee_height} 16
this is how a 1920x360 image is showing
frustration is that the start up video is running full screen on this screen.
@poppadum
I have uploaded some images with the correct aspect and i still see black bars top and bottom. with a very o
running the command fbset comes back with this
Not sure where to go from here?? Any help greatly received.
@poppadum Thanks for the very detailed response and the time you have taken out of your free time to respond to me. Firstly i am a very inexperienced on the software side, but i love to learn. Unfortunately that might generate a lot more questions. I hope you don't mind and let me know if i become a pain.
I didn't know i needed to add any images, it just seemed to be working out of the box so to speak. I will look at the guide and see if i can add some images with the correct size and see if that works.
i don't have a lot of free time this week so there might be a delay getting back to you with questions or to let you know it is working 
Thanks again and thanks for putting this project out there for everyone to use.
Lee
@poppadum a little more info as i have been messing about with this for a couple of hours without success and have noticed a few things that i am not sure are correct.
*my display is 1920x360 and i have set this up correctly
*when the system boots the Recalbox intro video runs full screen on the marquee display
*The dynquee picture displays on the marquee for a very short time and then shows a recalbox picture with the 4 pacmen
*the pictures that should display on the marquee are shown on the main screen on and off.
@poppadum I am having the same issues as daniel and have tried both of the suggestions that you made. The first just moved the image to the top of the screen. The second improved things but still has black bars top and bottom of the screen, Any help on this would be appreciated!
other things i noticed is the Racalbox start video runs full screen at the initial boot, then when dynquee shows it is not full screen.