I never really thought about this before but I noticed today, there are a lot of players who have A+ range at their primary position, and also played some games/innings at 1B. Their range ratings at 1B are inflated. It's like the usual pro-rating that is done when players have <20 games was somehow co-opted by their primary position range, or their speed, or something.
2000 Jim Edmonds, A+/A+ (1.000/10.76) ... actual stats 3 games, 7.33 RF/G
1944 Stan Spence, A+/A+ (1.000/11.49) ... actual stats 3 games, 6.67 RF/G
1979 George Brett, D/A+ (.987/11.33) ... actual stats 8 games, 6.50 RF/G
1986 Robin Yount, A+/A+ (1.000/10.80) ... actual stats 3 games, 4.33 RF/G