Have a look at this...

[stumblemumble]

It's odd and I can't figure what's going on...

Notice in the first pic how the rear triangle is shifted to the right? And it looks the same on the other side (obviously)...


Then in the third pic in regards to the seattube it's shifted to the left. Think about that...it doesn't make sense. All pics are of the same reference, didn't move a thing.

I can't figure out what's actually misaligned, it's bizarre.

Needless to say Greg is taking care of it, the pics are of the replacement rear triangle he sent to see if it was the problem. Thanks again Greg, there's a Russian River Damnation in the box for you.
Apologies for the large pics, I tried. And how do you put words between the pics?

[lidarman]

Angular twists can be associated with shifts. You might have something bent that rotates the rear. it appears as a left shift in once place and a right shift in another.

My guess is the error is near the bottom bracket from those photos.

[jncarpenter]

Is the hex link installed properly? It has some inherent offset to accommodate the drive train.

[stumblemumble]

Lower link is installed properly and torqued in the pics.