It's not that I'm trying to print a big part, I built the printer so I could when I wanted to. My bed is 310 x 310.
I suspect you're correct about the firmware, in fact, I was able to adjust my config.h to my expected parameters. I have not been able to load any firmware onto my mainboard, Anet 3D ver 1.5 for many reasons.
1. I know just about enough about arduino to get myself into grave trouble but I've tried many hours to get a file that will even go thru a verification process with no success what so ever.
I was hoping that cura would be an easier way out. I'm almost 70 years old and I just don't have the brains for this. I wish I knew someone who could sit beside me and mentor me but that's not likely to happen.
I appreciate your help and I'm open to any suggestions.
Thank you,
Bob