Its about ten years since I worked on FD-108/109/110 so here goes, on the 108 I think, there were 2 Gain Programs, the first at RA<1500 or GS capture it ran for about 120 sec and reduced the GS sensitivity by about 50%. This program could be overriden by MAN GS. Program 2 came in at MM or 200 RA and ran for about 10 sec reducing sensitivity by another aprox 20%. Dont Quote me on the exact figs. My memory cannot always be trusted!