Hi JB,
Unfortunately I can't quite make out the difference from the attached pic. It looks like the Drawing is showing the top of the angled braces above the sides, and the Photo showing them level with the sides, is that right?
The only thing I can suggest is to phone Richard Shepherd, Toylander Company owner, and explain the problem. I'm sure he'll have the answer, after all, he designed the tractor, and is always ready to help builders in any way he can.
Keep Busy,
Regards,
Mark.