but Xcopy does not have a way to exclude ... I need it to look for files such as ".lck" files and not copy them

Hm. According to the documentation:

 /EXCLUDE:file1[+file2][+file3]...
              Specifies a list of files containing strings.  Each stri
+ng
              should be in a separate line in the files.  When any of 
+the
              strings match any part of the absolute path of the file 
+to be
              copied, that file will be excluded from being copied.  F
+or
              example, specifying a string like \obj\ or >>>.obj<<< wi
+ll exclude
              all files underneath the directory obj or >>>all files w
+ith the
              .obj extension<<< respectively.
[download]

suggests that you've misread the documentation and that:

"xcopy /E /I /F /R /exclude:.lck <source> <destination>"
[download]

should do exactly what you are asking for.