I set my rarity configuration to this:

rarities {
S:ancientWeight=0.20
S:basicWeight=0.0
S:legendaryWeight=0.30
S:rareWeight=0.50
S:uncommonWeight=0.0
}

I did that because those two bottom rarities make a weapon deal less damage than what's listed in the NBT which I don't think is appropriate... especially if the person had to spend rare materials to craft the weapon. But despite setting both of those rarities at 0% chance to drop, I am still getting both of them. I even tried them at 5% rarity each, figuring maybe 0% wasn't allowed. But they were dropping at their default % rate.

Levels version: Levels 2-1.10.2-b1.1.1
Minecraft version: 1.10.2
Forge: 12.18.3.2202

It isn't fully implemented yet. I will implement it now, when I get a chance. Furthermore, Basic rarities deal as much damage as a normal vanilla weapon will. Others will do more damage. I'll also look into updating the damage that is seen too with rarity bonuses included.

Will be fixed in r1.1.0. This version will be for 1.11.2, though. However, I will also try to back port the 1.11.2 version to 1.10.2 again.

Should we unclose the ticket since you didn't actually fix it yet? Helps me keep track of the pending problems with my upcoming modpack release. But, its your git.

The reason it is closed is because I have fixed it code-wise. I'm making a few general tweaks right now and adding minor features so once I wrap that up, I'll push the build.