Header to pipe seal

[Deuce]

Is there any good way to seal the header to exhaust pipe? My White Bros E-series has a leak where it meets up with the head pipe, and I just want to fix it. I've tried moving the clamp to different spots, its mainly fixed it but still have some leakage. Or is this just something that happens?

 

[98-warrior]

I bought a heavy duty 1 3/4 harley exhaust clamp off ebay and cut a stip of liscence plate and cleaned sticker **** off and it sealed it of not a single leak around it so far..
RUSH TORCA EXHAUST CLAMP 1-3/4 INCH HARLEY UNIVERSAL