Ya it's super close. I needed to use wd40 to get the clamp on for it when it blew off. I think I'll put some dei foil on the new one and hope for the best. This coupler is also quite used which I'm sure didn't help. Didn't you put like 20k on it?
Here's the new coupler, need to cut it a bit.
http://i1134.photobucket.com/albums/...ps28cf2b0e.jpg

