I am working a restoring an 1814 center hall conlonial in upstate New York that has been neglected for several decades.  Some parts of the house have been worked on during that time, including one foundation wall in the basement.  The soil grade was above the mudsill on the house, which I have resolved.  There is now two feet of block exposed on the repaired wall.  Unfortunately, this block was stacked one on another, not staggered, as it should have ben.  I beleive that this was done to get around some big rocks that the previous owner did not want to move when he repaired the wall.  (This is only one of many things, like the five pointed stars of electrical wire taped together that I found in the attic.)  The blocks were not installed in a smooth wall, so one points in the next straight and another out.  Overall, the differences might be two inches.  We recently redid another wall properly, replacing the bowing rock foundation with block and then applying stucco on the ouside for appearance.

Given the distance that needs to be filled, a regular stucco is not realistic for this newly exposed foundation.  I have attached metal lath to the wall using anchor bolts.  Can anyone recommend a suitable mixture to make the facing.  I think that regular mortar is too thick and am considering building a plywood dam and pouring a mixture of portland cement and sand into the dam so it will flow in around the metal lath and get into the block.  I would appreciate any advice, other than to burn or buldoze and start over (which I wish I would do sometimes). 

I am also considering using a similar solution on the interior to help improve the condition and appearance of my workshop.

Thanks for the help.

Tim