Well, I have screwed this up royally. I finally got the crank in a few minutes ago. It didn't slide into the bottom bracket easily. I had to tap it in. I had installed the spacers in the bottom bracket. It apparently didn't need all three. No big deal, I'll tap the crankset out and remove two. Nope. Crankset will not tap back out. I am throwing in the towel and taking it to the shop. For the life of me I cannot figure out why the Shimano GRX crankset wouldn't slide into the Shimano bottom bracket fairly easily.