Basically you need a thin walled socket. If you ever had any experience with a motorcycle that came with its own tool kit you might recall what the spark plug replacement tool looked like.
It is a super thin piece of stamped steal that had holes on top for you to put a Allen wrench through to turn it.
A standard Craftsman socket is way to thick as your experiencing. I am currently ordering one from Greatbaymotorcycles.com (Triumph) so I can change mine myself.
If you have the tool kit that came with your bike you can find the tool in there. If not, ask another biker if they have one from any old Honda. I think it's an 18mm socket.
If you get one I would appreciate it if you could confirm the size you had success with.
Tre900
