Pencil Bleeding Through on SAT?

Yesterday I noticed three stray bubbles that bled through on my SAT and erased them, but now I’m worried that there were more I could have overlooked. Does something like this happen often and is the scantron machine able to identify this and still grade correctly?

I actually asked the same exact question yesterday but about the subject tests (just click on my profile and go to threads). The answers I got just said not to worry and no, it won’t affect your score.

I really do wish they provided some evidence to support their answers though. It still is worrying me but I guess we’ll find out in about a month. I’ll probably call CB by then to ask about this.

@neoking Thanks!