07 7010 after fillling up in the morning i can run till about 2 or so and it will all of a sudden go down to completely empty. We are in so pretty hilly ground so i can understand the fuel level changing some when going up and down hills but this is too much. After a bit it might come back around and come back up to 3/4 full. It also just started this in the last couple days. It gets real old having the pro 600 squaking at me all afternoon. Any ideas or just deal with it.