Efficiency: changed hardcoded values
Efficiency: changed hardcoded values

I changed these values a while ago and am just now committing.
I think I ran into a case in which I needed these values
larger so that I would not hit a fake ceiling.  I'm not
sure about this. 'numinnersteps', 'numrefine', and
'safetyfactor' are those made more conservative.

zat1gi/stochastic,zat1gi/stochastic,zat1gi/stochastic,zat1gi/stochastic