OK, I ran that job again yesterday in ABS with the Z lift at .32 and in a faster mode since it takes 20 hours in best quality. Didn't get an alignment problem on that run but it cracked all over. Could that have been from the lower fill rate on that mode? It was 15% and it took 9 hours instead of 20...

Thanks, I could try that and see what happens, my builds are long (8-20 hours) and I'm loosing half of them at this point. On the bright side I usually catch them before the whole job is done. My Simplify setting is at "0" and I understand they recommend ".5" mm if you set it.

Would Z lift cause the entire build plane to shift or just cause a blob at the contact point?

I have a new machine, run eight builds and half have developed the same shifting problem. First thought it was the glass shifting so made some little rubber wedges to take up space between the glass and the guide pins on the table. Did two good builds after that but yesterday the problem resurfaced....