What I do to resize is make a copy of the pic then left click on the copy. A list will appear and one of the options will be "open with" hover above that and a list with "paint" option will appear. Right click on that and the pic will open up on your screen. You will notice in the upper left the words "file, edit, view, image," and so on. Click on image and select "stretch/skew" you will see a screen showing the the size on a scale of %. I usually choke the image down to 15% on vert. and horizontal. When I close the program it will ask if I want to save changes, I do and then it's ready to go. I hope this helps as I'd love to see your rig. Please forgive me if I've stated the obvious.