I have a 62" scag with a Kawasaki FH641v-So9 engine on it. The engine recently decided to blow a oil seal and oil came out the top of the engine. My mechanic suggested to replace the short block due to the number of Hrs. If I rember correctly when I worked for someone else we had some ferris lawn mowers with these engines and they would give us problems often. Does any one know if the FH641V is worth replacing with a short block (do they have problems often)? Or should I buy a diffrent engine.