When I was in the 5th grade (let's see, that would have been 1960...), I had a pretty bad "back-handed left slant thing going on with my printing let alone trying to learn cursive. I was given a device that looked like an upside down basket with a cylindrical hole in the middle where your pencil was placed. The only way you could hold the pencil was by wrapping your hand around the basket and then printing straight up and down on the paper.
Today, I still write pretty much straight up and down but I must confess to turning my paper to the right in order to compensate for my left handedness.
Finally, I can't tell you the last time that I purposely used cursive writing for anything serious other than my signature. I block print everything and have for years. When I do cursively write, I have to sometimes stop and remember how to form the letter... That's a bit embarrassing, let me tell you.
Regards,
Vandy (Left Handed and Loving It!)