alligator squeezer?

[Shockwave]

So there I was, following the instructions until I concluded that what I was reading and what I thought I was reading were not the same thing. (I riveted the top aileron skin on before riveting the nose ribs to the aileron spar) No big deal I thought, they're hardly an inch from the edge. I can get a tool in there. Except I can't, the pneumatic squeezer is too large, and the rivet gun doesn't quite get lined up with any set in my arsenal. (straight, offset, and double offset)

Looks like a perfect umm, justification, for an alligator squeezer, but they command quite a price. So is there another way to go about getting these 6 rivets in? Preferably without taking things apart or starting over?