it's probably too late now. you'll have to get a new head gasket and do it again. not a bad idea to have it planed, but when you put it back on and torque it down in proper sequence, run it up to full operating temp with the radiator cap off, and let it cool completely. go watch a show, or clean your mess for an hour or something. do this 2-3 times, then retorque it and put the cap back on. personally, i would do it again after you get home from your first ride, too, but that's me