So i was out riding last weekend and cased a jump pretty good, and there must of been a rock or something cause I now have a cracked case just above where the drain plug is on the back of the motor. What I really want to know is, is can a person that is mechanically savvy and has worked on bikes for a long time handle this project? Do I need any special tools? If so are they expensive? Anything to replace while I'm in there?