I:\exp\6s-254623> merge.hdr.raw.exe  gray.1376b.3689x2462.hdr  6s-2015.1031-254550.7360x4912.blue.cv.t.raw
Read 1376 Bytes from gray.1376b.3689x2462.hdr
Read 72.304640 MBytes from 6s-2015.1031-254550.7360x4912.blue.cv.t.raw
Xres @ Hdr[16]=3689, Yres @ [22] = 2462
FIXED?? Xres @ Raw[16]=7360, Yres [22] = 4912
Wrote 72.306016 MBytes to TIF hdr.raw.merge.tif, Size: T-R-H=0

I:\exp\6s-254623>identify hdr.raw.merge.tif 
hdr.raw.merge.tif TIFF 7360x4912 7360x4912+0+0 16-bit Grayscale Gray 72.31MB ...

<p> Note the original and overwritten values.  </p>
<code>
Xres @ Hdr[16]=3689, Yres @ [22] = 2462
FIXED?? Xres @ Raw[16]=7360, Yres [22] = 4912  <<< WORKS!!!