header leaks where pipes converge into one

[NoPavemntNoProb]

Hey guys I have a set of headers that (Jegs brand) and I have had an exhaust leak on for awhile now. I've used a long tube as an "extended ear" to tell where its coming from. It turns out its comming from where the 4 tubes converge into one large (3" i think) pipe. I need to figure out a way to seal it without buying a new header. any ideas are welcome. oh and i can't see where the leak is exactly i can only hear its coming from that area.
thanks in advanced,
Dan

[NoPavemntNoProb]

I've attached a picture where I've circled 2 out of the 4 spots where the air leaks from (hence why i think its in the center of the 4 so i can't see it.:()
the other 2 spots are simply on the other side. exactly semetrical from where these 2 are. any suggestions will help,
Thanks

[charlie1935]

Sounds like a half ass job of welding to me.:gr_patrio

[NoPavemntNoProb]

yeah well they came like that... thats why I'll never get anything Jegs again. i need a way to fix this though.