For sure a factory defect, it would appear that your dealer may have been slow on the fix...? I bought my 2003 22101S in 2008, and at that point it was understood that the problem (factory screwup) was for real and needed/already had immidiate fixing. Again, I did not not mean to infer you overloaded it, just saying what the guy selling mine to me said about the problem. He had over 5 K hours operating the type, and then later ran a big rental fleet of same, along with much larger units of all types.
I have no idea how the big crane manufacturers get word out as to a problem, with aircraft there is an understood time tested way to do it, possibly you being in Canada and them in Texas didn't help either.
I like Canada better then Texas BTW.