SX/SXi/SXi Pro factory pipe help needed

i have a kawi 750 with the old factory limted pipe (the one with 2 tuning screws and the bottom hole inside the pipe) is there any one in the toms river area who can drill out the 2 tuning screws i bought the ski with them seized and the pip was tuned for top end (im looking for more bottom end. I was told by factory pipe that it is very difficult to get them out without messing anything up. Also the stinger now as a hole in it from vibrations on the motor mount. would it be ok to just get a patch welded on it or do i need to buy a new stinger. any help is appreciated thank you
 
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