I'm several hours into my play through with this mod now and I've hit a brick wall;

I'm attempting to set up Chemical Science Packs, and I have almost everything I need however I need Nexelit Plates, but there's a problem, In order to get the ability to craft Nexelit Plates, I need the Chem Science Packs, but I need Nexelit Plates to make the Chemical Science Packs and I don't know how to obtain Nexelit Plates to make these Science Packs to begin with, without it I can't continue playing.

Is there an alternate method?

Here's a couple screencaps of my issue.
https://cdn.discordapp.com/attachments/272167042998730753/667893999465660416/Capture.PNG
https://cdn.discordapp.com/attachments/272167042998730753/667894003353780234/Capture2.PNG

Edit: Wound up extracting the mod and altering the recipe.lua and told it to use Plastic Bars for now.

you can find recipe tailings to raw nexelit ore

Same issue here. Locked at green science. Tailing's recipe is available only with Pyanodons Raw Ores which shouldn't be strictly necessary for this mod to work, indeed I don't use it since I already have Bob&Angel.

Had to fall back on editing manually the recipe as OP did, but it doesn't seem right :/