FWIW, if the fuel is so low on 129W that will cause it to fail within 30 months or so, then you can bet it doesn't have the fuel left to move to 148W and have any life left.
Also, if you read the local Honolulu thread on AVS, they claim they can get a signal on 129W - and have one now - but they just won't authorize Voom or anything else on it.
Also, they claim they cannot get 148W which floors me as its literally sitting 7 degrees East of the Big Island and 9 degrees East of Honolulu.
And finally, remember they have plenty of space open on 148W - and always have. The only reason to move channels OFF 148W is to reduce the expense of a second dish and switch.
Also, CBS West with a full high bitrate 1920x1080i has always been on 148W.
And Finally, this post explains why they will never make the move you speak of:
http://www.satelliteguys.us/showpost.php?p=659300&postcount=2