>>In a compressed file it showed that it had compression "storing" and "srep:m3f:a1+lzma:69mb:normal:bt4:128:lc8".
"Storing" simply means "no compression"
Are you using MAsked data Compression or something
its probably that files compressed with "storing" are not compressible
at all thus decided to not use any compression at all
here are some of the thread helpful for you
read the post from other user, this is very helpful for all of us
http://fileforums.com/showthread.php?t=99120
http://fileforums.com/showthread.php?t=97530
http://fileforums.com/showthread.php?t=99122
http://fileforums.com/showthread.php?t=93191