Okay, so I am opening a new thread about this even though I have already opened a thread for the situation before but I don’t know if just replying on the old thread will attract viewers ( new to forums so..). Basically I looped the bike (390 duke) at around 50km/h and this caused a small crack on the crankcase which results in oil leak. My KTM mechanic tells me that the crankcase needs replacement. New, factory part costs 516€ and mechanic’s work will cost 400€ + 100 for expendables. Now there is a seller on eBay, (100% positive feedback he has) that sells a used rc390 crankcase for basically half the price and less. The used crankcase has 17.000km on it. My bike has 12.000km. Seller says that it’s in good condition, no problems. He accepts returns. I really need opinions on what to choose. Thanks a lot.