Build is not invertable to extract

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Get software from 
ftp://www.dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/06-08-12-r19342/Asus
-RTN13U/
2. Extract via extract-ng script.
3. Build via build-ng

What is the expected output? What do you see instead?
Expected:Same image as in step 1.
real: error due image is little bit larger.
What version of the product are you using? On what operating system?
Latest

Please provide any additional information below.

Original issue reported on code.google.com by icegood1...@gmail.com on 15 Jul 2012 at 5:01

[GoogleCodeExporter]

It's experimental so proceed at your own risk, but you can try running build-ng 
with the -min option:

$ ./build-ng -min

Original comment by heffne...@gmail.com on 17 Jul 2012 at 8:26

[GoogleCodeExporter]

@icegood:
Remember a recreation will never be the same as the original.
Except when it is done on the same system with the same tools, called with the 
same parameters and the same content, but then still timestamps may differ.

By the way did the rebuild image work on your Asus-RTN13U?

Original comment by matthias...@gmail.com on 3 Aug 2012 at 9:31

[GoogleCodeExporter]

Original comment by jeremy.collake@gmail.com on 11 Jun 2013 at 8:20

• Changed state: Fixed