Thanks for the reply. Just to follow-up a bit
1) Is there any reason to prefer one loop modeling protocol over another for larger insertions? I could of course try them all, but perhaps logic or experience can help point the way.
2) Would I have to compile the whole she-bang? This is non-trivial and our systems person is away for a few weeks. What would be a suitable value for max_loop_depth? Is this related to the length of the loop in any way?
3) Will use of vall_cst_coord.dat.2001-02-02 lead to worse performance than if a more recent file were available? Could vall_cst_coord.dat.2006-05-05, or another recent file, be made available somehow?
Again, your help much appreciated.