Randy Lea Barnes

My Brother Sg. Richard Barnes USMC served with the WTS-37, MWSG-37 3DAW, MCAS El Toro California for 2 years. His military papers are showing this to be factual on DD-214 Form. He enlisted in the service in later 1969 and left the service in 1985. He served with the 37th as a heavy vehicle operator for hangers 296 and 297. He has been sick since leaving the service and has run into many brick walls with the VA. Does anyone here know if R.R.Thrasher LTCOL USMC WTS-37 has any information concerning hanger 296 & 297?