1) Difference between native mesh and standard mesh
I open the meshes with the following commands, and press Z for the same number of times to arrive at presumably the same view point:
suma -i lh.smoothwm.asc &
suma -i std.200.lh.smoothwm.asc &
As shown in the attached picture, the difference are mainly two-fold:
First, there seems to be a small global shift in the std mesh (leftward and downward). Is this a real shift in the vertices coordinates, or just a visualization issue?
Second, there are small differences in the shape of small surface spikes and the shade of surface dents (highlighted in the black circles). I guess these are acceptable resampling error and should not be worried about. Am I correct?

2) If the above are not to be worried, is there any reason or circumstance that argues in favor of using native mesh compared with standard mesh? Assuming that one is just interested in doing single subject level analysis.

3) As per afni version "Precompiled binary macosx_10.7_local: Apr 30 2018 (Version AFNI_18.1.09)", there seems to be a minor bug in @surf_to_vol_spackle which prevents it from executing. In line 205,
set surfB_arg = "-surfB $surfB"
perhaps should be
set surfB_arg = "-surf_B $surfB"

4) What should I use for -maskset option?
It seems that the -maskset is also used as -sv, so does it need to have the same xform embedded in its .HEAD as SurfVol_Alnd_Exp+orig.HEAD?
Also, should it be a mask that only has 1's in the gray matter, and 0's elsewhere? How to construct such a mask in the first place before using 3dSurf2Vol?

Thanks for your patience for reading through so many questions:P

Best regards,
Chencan Qian