Pulled the Mess that was my Timing Chain....

Hmmm, well absolutely. As mentioned, the lifter-to-cam contact points will be off due to the block wear, and even without that, they could/would be a bit different in a different block anyhow. So a new wear pattern will have to be established. Due to the block change, actual new (or properly reground) lifters are needed. The same lifters that came with the used cam likely won't have the same contact points when in a different block.