I work full time as a Compliance Manager in a pharmaceutical manufacturing company in Miami.

My contractor initially after install said we can have those buffed out but now he is saying it's a manufacturers error and have to pay a specialized trade to fix it.My contractor also claimed that he went to the manufacturer and all their pieces in the color we bought had these markings but refused to rectify the situation.

When you hand them the prefab instructions in Chinese they're going to tell you to go away.

You could also probably put a self leveler down over the tile (if the manufacturer allows this) and then go over with the LVT or carpet.

This property was a manufactured home on an acre-and-a-quarter out in Apache Junction.  

Because of appreciation a great number of buyers are willing to pay over asking . let's say an investor can get a deal for 50k worth 70k, with just a 5% yearly appreciation . that same deal would be worth close to 500k by the time a person retires, great buy and hold lol..I have buyers for trailers, manufactured homes etc.

If everything seems to go well, offer them an application (or point them to the website), and give them instructions for submitting it to you. 

Hello,I used to work for a development company that bought lots and then built modular or manufactured homes on them.

Look for some BP instructional videos by Brandon Turner.

Basically window manufacturing companies make 1000's of windows a year.