Just bought a 1969 MFG Carice 195 with a 1960 Johnson 75hp. When i run the motor with the garden hose attached to the lower unit water shoots out the weep hole by the upper oil plug. Then when i shut everything down and turn off the garden hose it looks like oil and water runs out the weep hole for a few min. Im probly looking for a rebuild on the lower until right? I found the seal kits online for $25 but is this something thats easy to replace? I have rebuilt ATV motors before so im not scared to tackle someting just dont wanna get over my head never messed with boat motor before. Is this something thats just simply and not a total seal kit? Thanks for your help!