Congratulations on your new tractor! I took delivery on my 2305 about a month ago and have been putting it through the paces. I have a BB on the back and my dealer told me that would be enough weight. NOT!!! The back end lifted like a feather when I was trying to pull a stake out of the ground. Since then I have loaded the tires and put suitcase weights on the BB. It is a different tractor! Now the back end stays put. The loader will stall before the backend budges. Overall it is MUCH more stable. I also don't need 4x4 as often. I'm in the process of making a website showing how I filled the tires. I'll try to let you know when it's up. It was a whole lot easier than I thought it would be but the payoff is HUGE!!!