(Very) Partial Answer / Work In Progress:

>! Looking at different character counts, we have the following distribution:  
>! <pre><code>
>!      Count | Doubles | Triples 
>! T:      32         6         1
>! I:      32         0         0
>! N:      29         3         1
>! K:      41         6         0
>! L:      48         3         0
>! E:      37         3         0
>! R:      23         0         0
>! S:      91        24         3
>! </code></pre>  
>! This leads me to believe that the character 'S' is some sort of flow control character, instead of a numeral. My best guess so far:  
>!  <pre><code>Single S - Character separator
>!Double S - Word separator
>!Triple S - Line separator  </code></pre>

Working with this assumption, we have the message:
>! <pre><code>RLLIR-LK-TLET-TKL
>!KKNKK EE-LIRL-NKL-LLTL TRE-EKE TELN-EIRN-LETLTE-L-EIRE LILEE-KNKNKNL KTK-NENN-LTEELE KLKKLKK REKI TNL-NK-RLK-EN-LIRE KRN-LIRLRE-N
>!EL-LIL TIEL KIEIN-NILI-RELIEI KKNNK NTI-TTI-RKLIRE-TEI L KRNLI-TL-N EK-ELI NNN TTE-L RLLI-TTNTTTT-RKRLKI LIRKRT KEKLK-RTTILI-KK-TET
>!ENE-E-KILKI-TINLI-KTN-RKLI</code></pre>

This gives us a few hints as to what some characters are:  
>! Assuming the character is determined by adding the value of each character that makes it, we have a few single character "words":  
>! <pre><code>KKNKK
>!KLKKLKK
>!REKI
>!TIEL
>!KKNNK
>!L
>!NNN</code></pre>
>! Most likely, these single character "words" are either A (adding up to 1), I (adding up to 9), maybe N or W (14 or 23, for coordinates), or numbers (valued 27-36), or punctuation, that would most likely be part of longer words.  
>! The safest guess is that L has a numerical value of 1, which means an L on its own is an A. It also seems possible, though less directly, that NNN is "I", with N having a numerical value of 3. This also means that an N on its own is "C"