Got my programmer weeks ago after I ordered, only got the eraser today from China. Going to try this today. I found a site that explains a lot of little bits of info I'm sure others are interested in as well, and includes a chart for the types, sizes and manufacturers of them, which I'm guessing is useful.
I'll report back later, and hopefully I figure this out as easy as well.
What time are you guys using for the eraser? I'm sure this is likely consistent for all of us.