My bike wont start. The kick starter is suck. I was riding up a dune i wasnt going to make it for i didnt have a paddle so i laid the bike down. I rolled the bike down the dune and popped the clutch and the bike started for a sec then died. Wouldnt start, possible fouled plug so i changed it but not luck. The kick starter got stuck after a couple kicks. I have no idea where to start help please! if i need to rebuild the top end can i get a rough estimate of how much it will cost.