Why am I only finding X, Y & Z weapons and nothing else? Do I have an LL conflict?

No. The Leveled Lists are heavily WIP right now. Our Leveled Lists are script-injected, so there is no concern for LL conflicts with other mods. MF contains 80+ weapons, so balancing LLs and getting a good variety of weapons to appear consistently without repeating the same weapon over and over is difficult. Rest assured, as time goes on, the LLs should hopefully improve. “Script-injected LLs are harder than we anticipated.” – Lead Developer