Hey, so when i bought my 03 660r le, it came with a snapped exhaust stud. Time came to try changing it, and so far i have drilled it a bit, sprayed penetrating lube many many times on it (raptors vertical, nose up), and have tried an easy out with heat, without breaking it loose or breaking the easy out. It won't budge. With that being said what is the correct drill and tap size so i can get this sucker finished? Thanks a bunch!