I agree with Lazorkay, whenever I need to make sure the dies stay in the right place, I use a less sticky type of tape to make sure they don't move. I use tape for frames, to keep them at the proper distance from each other, or when I am die cutting a stamp and want to make sure it stays centered.
I took the little shelf thing out of mine because I run 8 1/2" x 11" paper through it all the time.
The only thing I wish for in the GC is that it was just 1/2" or so wider. It's just a hair narrow for the standard letter sized paper, but it does work well on it anyway!
I use my GC daily, and only use my BK for a few things now.