It's never too late to follow up on something. I found out by mere chance only last year thanks to being sent an incorrect form by my father's Old Comrades Association that he was actually entitled to have applied for a GSM in 1946, having served in Java for 8 months in late 1945/early 1946. He never did so for whatever reason. I applied to the Medal Office and am now in possession - 69 years later - of his GSM with SE Asia 1945-46 clasp, of which I am very proud.
So..... never give up!
RRTB