Hi Drongle, thanks for responding
1. Made in Blender
2. I know it's very large, I'm working on cutting it down, but it's a pretty detailed piece: Tris in Blender: 30,776. in the uploader its the same
3. It's one object: I made them separately and joined them in blender and uploaded as one.
4. I used 5 Materials, and the LODs have the same, in blender they are also the same name etc.
5. Here is my original upload, no messing around with any buttons etc: http://gyazo.com/d88d5b664d3d9c69232d1b196e84890a and this is one of my LODs I tried to make (I used decimation just to test it out), but I also hand removed edges etc on a different LoD, yet I still got the same distortion and enlargement http://gyazo.com/7b67275984540c847de4f7fcacc69ae4 (The preview was not changed in anyway, it's significantly bigger than my original.
I made sure the model was the only thing I was uploading, I also tried to upload a small box for my lowest LOD, but that was not working, it was also enlarged and distorted.... being new, I am not even sure if that's good practice. I appreciate your help!