Pistons what is the acceptable movement?

I bought a remanufactured long block to replace the existing engine because of a broken piston. The new engine had several valve train issues, and I went round and round with the warranty company and they decided to send 2 new heads and claimed they would reimburse me on gaskets and valve train parts If I purchase them and send them the bad parts. While I was cleaning the block for the new gaskets, I wiped off the pistons and noticed they move. I don't know what the acceptable movement is, but it looks excessive. I checked the bore at the top of the cylinder and IF the pistons are new and I am reading the numbers right they should be fine. I only drove the truck about 26 miles with the new engine and the warranty company is giving me trouble and I don't know if removing the piston to measure the skirt would void the warranty but maybe you can tell from this video if it's an acceptable amount of wiggle.