Additionally, the mod did not properly load until I changed some conflicting block IDs. (From 20* to 21*) Is there some sort of block ID conflict check happening?
If you altered them via ID Resolver, you do have to go into the actual config. for this add-on and give those numbers ID Resolve assigned to blocks/items.. Because (unfortunately) ID resolve won't alter text based config.s, and That's where the add-on pulls its slot ID dedications from...