match tol.dist to model call

make tol.dist = 0.005.  I don't care
instead of plus 1, do plus 2

I just ran a case that failed twice.  what a waste of time.  so to be
sure, add two to the number of groups variable, to cut the count
significantly.

Probably I should just start out with a target of 90 groups, because
that seems to be about right in most cases.
okay flipping to hard 90, plus 1 again

don't do the plus 2 thing, do a target of group size of 90, and then
add one to the number of iterations if mem is exceeded.