The height of the platform and separator assembly above the spine 130 may be adjusted by selectively engaging {HEAD ~ the locking pin} 189 with {TAIL ~ a suitably size hole} defined by the separator 186 and one of the holes 182 in the support rod 
The height of the platform and separator assembly above the spine 130 may be adjusted by selectively engaging { HEAD ~ the locking pin } 189 with { TAIL ~ a suitably size hole } defined by the separator 186 and one of the holes 182 in the support rod
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH