I have a situation and need some input. I just bought this bike and I'm in the process of fixing the mistakes of others. It has a badly stripped bolt on the bottom of the case behind the oil filter, and just below the net filter. There is even a small section of engine case missing that the bolt screws into. Any suggestions as to how to fix? I don't know yet how to attach pixs...where can I learn? I will send attachments as soon as I can.