Currently foundations and most other build objects (columns, spandrels, stairs, railings, fences, etc.) are not available for mesh modification directly. As far as I know I have been the only one to successfully create a new stair, railing, and fence by doing things manually (cloning and renumbering... a pia). I don't think that modifying the mesh will help this scenario, to the best of my knowledge the section size is hard coded, although I could be wrong. An alternative is to create both foundation and wall patterns that only use one tile.
This is a weight issue. Most of the sleeve is weighted to the arm and clavicle except for a small portion that is weighted to the spine almost 100%. I think you may need to hand weight that section to have a smoother gradient.
So with this updated .package I see that the two new bones do not have a parent bone selected. That will affect the positions of the bones. Take a look at THIS thread for information on how to rotate the bones (specifically my responses).
Last Edit: Sept 18, 2017 18:15:44 GMT -5 by brujah
Rename the actor in your Clips and their headers to fan. You will also need to change the instance of the ASM in your Animation Tuning resources. Currently it is 02d5df13:00000000:1D22A858D75C010F, it needs to be 02d5df13:80000000:1D22A858D75C010F
The bone position/rotation in the .package is incorrect, they need to be where the bone is in blender. I'm not sure how you made the animation (also not sure the reason for the extra bone) but looping animations like this don't need to be repeated with any modifier and that may be causing it to not import properly.
You're on the right track. Adjust those few things and test again.
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