Knew a retired engineer from IH; they had that problem with axles breaking on the prototype combines. But in typical IH fashion, they never did anything about fixing the problem.
A retired JD engineer moved just up the street from us. He was mad at Deere for not fixing problems that they've had from Day 1 with their engines and injector pumps. They called him back from retirement twice to work on the engine problems - and then wouldn't use his suggestions, so he told them to get lost.