I had dual Flowmaster 40 Series put on my truck a couple of days ago, and I got under it and felt around for any leaks, and I found a total of three pinpoint leaks on the top of a few welds that connected the mufflers to my the pipes. Is it normal to have a couple tiny leaks or should it be perfect and airtight all the way out? Should I just take it back and have them go back over the welds? Anyone else had this problem? Seems like everytime I get dual exhaust put on my truck I find leaks. I might be too picky. Thanks for any help or suggestions.