i bought a 99 banshee for a decent price, previous owner is not mechanicaly inclined at all i find new weird stuff alot as i tear the bike down. long story short same old story of broken case bike, had some ebay chain when i bought wich im suprised after one broken cheap chain he bought another. its a chunk on the topside of the sprocket good sized chunk goes all the way to the clutch its only external peices of the case affected doesnt leak or have any non cosmetic peices missing or cracks. should i replace it after dune season, or since i work at a metal shop find another case with that section good cut it out and weld it on to mine, or make a new peice to go there out of aluminum and weld it in. if i should replace it what would it cost since i hate to take the case off since i would have to tear down the whole motor and the top end is very fresh.