Didn't notice the weld repair on cover until disassembly. Not sure if it leaked at that bolt whole. Thread look a little messed up in that spot. Rest of head it's self worked good. It came out of a running raptor 660 with no smoke no tapping. The head is used and the journals show wear. The cam still spun fine and this was still a good running engine.   the cover might need to be repaired or replaced because of the spot mentioned,  Selling as is. Do not expect a perfect brand new  cylinder head. Simply selling as a working cylinder head.