I broke the left side of my engine case. (Clutch cable lever mount)(Sprocket guard mount). A couple questions. I found a used left side 2009 yz case. Would that be compatible? They do have different part numbers, I am hoping the left side is the same and the right case is different. If they are the same, what are the odds the crankshaft alignment will be ok. Second question, If buying used won't work, are there any alternatives to buying Oem which starts at about $700 for the case?