Sorry for a rude bump of my own post here but there were a few things that were not cleared out:

1) The errors in the output related to the check-flip option:

++ Writing -allcostX1D results to '__tt_lr_flipcosts.1D'
 +  - histogram: source clip 288.416 .. 1065.28; base clip 196.319 .. 848.294
 +  - versus source range 1.69773e-05 .. 1148.31; base range 0 .. 934.575
 + 53147 total points stored in 561 'RHDD(11.1151)' bloks
++ -allcostX1D finished
ERROR: error reading cost list file
No flip cost is 1000.000000 for lpc+zz cost function
ERROR: error reading cost list file
Flip cost is 1000.000000 for lpc+zz cost function
Data does not need flipping

2) I noticed that the despike block was removed in the 6b example. Did I miss the memo regarding despiking being bad?

3) As far as I understood the 6b example you only get the "anaicored" stats output since you use regress_3dD_stop. We want to get both with and without anaticor so I removed regress_3dD_stop. In a previous thread I was recommended by one of you to use -regress_anaticor_fast since it was supposed to be both faster and better but I don't see that in 6b. Is there a reason for this?

4) We have previously been using -regress_motion_types demean deriv. In 6b this is not specified and I think the default is only to use the de-meaned versions of the motion parameters. Is deriv not recommended?

Sorry for bump and thanks in advance!