I have an 07 yz450 that i havent ridden in over a year due to a crash and living circumstances. I just got it running again and noticed a ticking noise coming from what seems like the exhaust header to head. I know when i crashed trail riding the exhaust pipe experienced a good portion of the impact. I removed the head pipe and it seems like teh bolt and stud may be slightly bent. I also noticed the pipe itself has a dimple in it by the 180 turn towards the head...probably due to the pipe bending/kinking. Before i go and screw something up, what would be the best way to attack this situation. Should i try reinstalling the head pipe as is and see if things mate up properly? Maybe its one of those cases where it got misaligned and just needed to be loosened and tightened again?? Should i get new hardware? can teh stud be replaced? Should i try bending the head pipe? Any suggestions would be appreciated.