X-Pipe and Headers Installed! Got a question...

Got my Dr. Gas o/r X and ceramic coated BBK LT's installed and just got the car back. Sounds so awesome... very powerful race type sound with the magnaflow mufflers. Nice and grumbly down low and mean as hell up high. Quite noticeable power gains in the upper RPMs.... favorite mod yet. Everything looks good and all but there is one problem... There is a small barely audible exhaust leak from the drivers side header. The guy who installed it said it would prolly go away in a few days; he said the gasket just needed to seat in. Is this true? I suppose it doesnt really matter cause he said hed fix it if it didnt go away by next week, but I just wanted to know if it is actually possible that itd just go away.

Thanks in advance guys -Mark
 
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