Has anyone purchased a head for a Koehler sv600 (20hp) recently? A valve seat went on mine so I went to my local cub dealer to order a new head and they told me it would be at least a week to order one in so I went to eBay thinking I could get one quicker which I did by two days. I got the head bolted up valves adjusted and tried to bolt on the valve cover and the holes are there but not threaded. So the seller isn't getting back to me so I order another one from a different seller and a week later I get the second new head and guess what? No threads. So thru this whole process it's a month later and I just wasted a head gasket And have a hay field for a yard.