Hi, funnily enough, about an hour after writing this, it dawned on me that maybe we've introduced a load that shouldn't be there. This seems logical as the first starter got so hot that it was smoking. It was not benched as it appeared the starter was worked to death. The replacement one is doing the same thing (getting very hot, but this time we are aware of it and not "abusing" it).

Yes, checked historical codes as well, there are a couple in there but they were there from time of purchase of the machine a couple months ago.

I've got a feeling you're right. Today (time permitting) we'll attempt to unload the pump or pull it and see if the cranking improves.

Thanks!!