Multiple biomes spawning close together

When I am making the more biomes mod, I made 11 biomes and made each of their biome spawning weight to about 60, and when I spawned, I found out that I spawned inside one of the biomes. When I tried to leave, I found myself in another biome of mine, and it continues, one by one, with no original minecraft biomes found. Finally, when I got out of the biome group and I found the original minecraft biome (plain), I continued to go forward but I never saw any custom biome again. Even one of my biomes, jungle cliffs, which has a parent biome of jungle, spawns without seeing any jungle biome nearby.