Hey @2010wolf!
So the set actor scale 3D node specifically scales the root of something, which propogates down to all children. I’m going to guess that the issue lies in your BP_Base_Unit. What looks like is happening is some strange thing where the skeleton’s bone scale values are all set to 5, or possibly even a null value? So it is shrinking the skeleton’s bone scales, but not the scale of the SK_Mesh itself. Hmm.
Does it still thin them out when you DO NOT use the ragdoll node?
Check settings for the skeleton and the BP_Base_Unit itself and make sure there’s no places with scale locked- or possibly not parented to the root. That could be an issue here. 