Nice work!!!
I experienced your pain with Custom Metal Werks exhausts too. I had two of them from George, neither were identical, and one much better than the other. Have a look on this thread, maybe some of those pictures might help:
Roaring Forties #44 - Ron Earp's GT40
One set was really tight and nice, the uncoated ones, and those I sold with the car. The other set was okay, but needed some tweaking. I'm pretty sure that:
You + Buddy + Beer + Torch + Iron bar = Aligned pipes
I'd recommend to use two separate mufflers on the crossover exhaust instead of the single - the certain sound works and doesn't get muffled and lost.