Changing the spark plugs. Got a problem.

I did a search and came up with nothing. Anyways I am trying to change my plugs and the 3rd. plug ,on either side of the block,(by 3rd. I mean if you are standing at the front of the engine and it is the 3rd. plug back, Sorry had to clarify that) is in at an angle that I broke it getting it out and broke 2 new ones trying to put them in. I am so frustrated. I have MAC equal length headers that I think are causing me the problem. The plug socket goes on ok but I can't get the right angle with the socket wrench. The socket wrench gets stuck on the headers and acts as a pry and then breaks the plugs. What can I do to change them. I don't want to pay $190 CDN. to get them replaced but might have to as a last resort. I will try again tonight with a friend to help. Thanks in advance for your help.