Plugging leaky condenser?

[Ozarkian]

Have reflux still made from an old plan before I discovered this forum, CM type, would not build again. There is a small leak somewhere in condenser so a few drops of cooling water come out the discharge when running water and not distilling. Really hate to desolder everything so thinking maybe recirculating water in a loop with a pump I have and adding some bentonite clay to the water might seal as bentonite is used for sealing ponds among other things. Any thoughts/suggestions appreciated.