Paddles Lundquist

Ahum hello! I'm an older mesh developer and trying to wrap my head around the bento rig. I'm expierencing issues when even just trying to export/import the base mesh that comes with the skeleton, the arms go all goofy. I'm using Blender and the bento compatible Firestorm. I would super appreciate if someone would help me get going with this, I'd even be willing to pay a good amount of L for some knowledge. Thank you so much!