for the smell I finally made a pouch with activated charcoal and placed it in each of the cases I have, I have 2 machines. I am leaving it in on a permeant basis. I took it out for a short period of time and the odor came back some. The charcoal is resolving the problem. I picked up the charcoal at a local pet shop and made a small pouch out of some unbleached muslin
I also purchased another case for one on my machines. The case for one was more fragile that I would have it for carrying it around. I need to get that one reworked someday. The new case came from an online source and cost me somewhere around $60. It is slightly larger than the original case but works well.