Possible data loss whlie transfering from Labview 7.0 into Matlab [binary]

Greetings,
I am kind of confused on binary data processing from labview to matlab. I tried to follow this thread by C. Minnella:
http://forums.ni.com/ni/board/message?board.id=170&message.id=211371&query.id=131675#M211371
And it was a great help for me to understand many of my issues. However there is something wrong with data that I am writting and retrieving in Matlab
Here is how signal looks in Labview
http://img126.imageshack.us/my.php?image=picture1va4.png
And its spectrum
http://img126.imageshack.us/my.php?image=picture3hn6.png
http://img146.imageshack.us/my.php?image=picture4br6.png
And this is what I am getting in Matlab:
http://img357.imageshack.us/my.php?image=picture7jq7.jpg
my vi:
http://img146.imageshack.us/my.php?image=picture2wn0.png
The only change I did was replacing DAQ task with Global chanel constant, since it has original scaling for the data from Load Cell (Fx Axis in particular), this is the device I am getting data from, it is in rest, sitting on the table.
I can't figureout what is happening, looks like it is clipped, besides the amplitude is not correct.
Would really appreciate any insights,
Oleks

Hello Ton,
Thank you for the fast reply, here is a part of the code that reads from Labview data file:
%Read header information, return in a structure[headerInfo,fileMark] = GetHeader(fileName,pathName, dataBytes);
%Open binary file Big endian formatfid=fopen([pathName fileName],'rb','ieee-be'); %Move file marker to begining of scansfseek(fid,fileMark+startScan,'bof'); %Read number of requested scansy=fread(fid,headerInfo.NumChannels*scans,dataType);
%Reshape data into a matrix [scans x channels]y=reshape(y,headerInfo.NumChannels,[])';
%Close binary filefclose(fid);
I basically followed example posted in 2006 on NI forum. I think my major concern is whether data is getting to matlab scaled correctly (it is scaled within global channel to Newtons) and looks like I am not getting the same data type in Matlab.

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