So we are looking at these maurer Tip-up kits to expand our hoppers 60 or 120 bushels. We have 9870s with 20.8x38 duals. Everyone loves the thought of a bigger hopper but at what expense? What is going to give out, axles? tires? frame? Or are they perfectly fine and the combine can handle it. We used to add hopper extensions(total volume 300bus) to our 9600s and we had no problems except the clean grain auger belt would wear out more often. So it makes me wonder if this is a viable option for a STS. Opinions anyone?