Insufficient Memory

In my latest run we had 5 tiles fail for insufficient memory.  The error message suggests "adjust the Processing settings or reduce the size of your data".   Since the Reconstruction is locked, you can not change the Tiling size, what is the most efficient way to Reconstruct and process the areas covered by the 5 failed tiles?  Project is 127.08 gigapixels and ran for 4 days.  Should not need to reprocess the whole job over again just to use a different tile size (switching from 16GB to 12GB for example).  Could someone provide the workflow for this error condition?

Opinion: The software should automatically subdivide any tile that fails for insufficient memory and not force the end user to reprocess data for a second time.  (Or provide the workflows for handling common errors)