I have a new LA765 loader. The same graphic / verbiage is in my manual as well. However, I regularly lift and roll back with the stick in the lower left corner. Maybe I'm just babying it, but I haven't noticed any real decrease in lifting ability. It could be because the curl / roll back is already curled / rolled back pretty quickly while the loader is still low. Anyway, it was one of the main reasons I went with Kubota (old tractor wouldn't do it) and I spent a minute or two while test driving testing this specific thing.