Fresh engine, wiped cam? Tick? (new pics added)

the lobes of the cam look like they are covered in rust.....just like the valley of the engine was.....did you happen to have your block numbers jotted down prior to the build to compare to you block? I wonder if maybe they screwed your block up during the machine process and then swapped it with a junk yard block or something maybe?....for only 250 miles there shouldnt be any rust on those lobes like that......that could have been the kick start to your bad cam wear problem right there.....odd