For some reason I can't see those images on my computer, but I can on my phone, so I took a close look, and it appears the existing soil was already heavily modified with pumice or some similar gravelly sized rock. I apologize if you showed this before and I didn't see it the first time. You definitely should be mixing more organic into the soil. I realize it's a huge hassle to dig out, mix, and pour back in, but I think the effort will be worth it down the road. You do very neat work.
My advice at this point would be to examine what 25% pumice in that Amend soil looks like, just visually, and then try to get the bed to look roughly the same. Maybe mix in roughly an equal volume of Amend? I thought the existing soil was devoid of rock. Right now I'd guess you have about 50% rock in what you prepared, just using the eyeball test. And that will work okay, but you'd have to water more often and probably the plants would not thrive quite as well, compared to soil that would hold more water and contain more nutrients. If you were growing really rot-sensitive plants or the existing soil was mostly clay, you might be good to go at this point with lots of rock in there, but I think you'll get better results if you reduce the relative amount.
So again, sorry for the confusion, but that first picture would suggest you might need to mix quite a bit more organic soil (the Amend product) into the ground. Or please correct me if my visual observations there are mistaken.
