Hi everyone, looking for assistance in resolving a oil leak that I cannot identify. After a 30min running at 2800rpm and stopping I get oil appearing at the rear of the boat on the surface of the water. The drive was rebuilt last year, and last week pulled it off to replace broken shift cable. I replaced the gear shift rod oil seal, top cap and shift gear rubber seals. Ran the engine and drive until warm but no signs of any oil leak. Back in the water and after getting warm oil appears every 40 sec approximately. I got I the water to check but still no visual signs of any leak .. anyone experienced this ?