Yes you can request a hand grader. I believe they will do this automatically if they notice a bizarre pattern (e.g.- all the answers are shifted down one number).
@Pacifico where did you hear about them doing it automatically? I thought it was only done upon request and you had to pay $100. Also, I thought you were out of luck if you made a bubbling error like that.
I got an app waiver from every top 20 school outside of H,Y,and S.... I'm applying exclusively to the top 20 and hopefully one accepts me with a scholarship.
Yes, request a specific letter and a general one. Make sure to specify as much in the requests. Then, when you are choosing which letters to assign to which schools, you'll have the ability to assign the specific one to the school it is tailored to.