Just wanted to take minute to update this thread with the input I received from my local Cub dealer.
Basically, I was told that a "sealed" trans axle is not meant to be serviced, and for that reason, any work done, even it was maintenance, would void my warranty on the unit.
I could hear the person I spoke with asking some of the other employees, and to be honest, I was not impressed with the dialog I overheard. They could not understand/comprehend the logic behind servicing the unit, and kept asking why I would want to do maintenance on a maintenance free unit. I tried to explain that just because it is not a simple task to perform without a drain plug, it doesn't mean that the unit would not benefit from some fresh fluid, kind of like the Briggs no oil change system. This kept going in a circle back to the "It's a sealed unit that's not meant to be serviced, so why would you want to do that." The conversation pretty much ended with them saying when they die they die, and that's all there is to it
That said, I am not sure how I am going to proceed with this. The options I am seeing are...
1. Take my chances, drop the unit and change the fluid and hope I don't have any warranty issues
2. Use it as I have been, allowing time to cool in between working it hard and change the fluid as soon as my warranty coverage is up
3. Use it as I would a larger machine without taking breaks, get stuff done faster, just use the warranty if needed and sell/replace the tractor with something beefier after the warranty expires