Where is it seeping from? Is it the variable drive, the output on the variable drive, or the output for the chopper? We have had all three leak. Don't let them take apart the variable drive and not replace all the o-rings and seals in it. If they aren't careful, it will leak, and then there are fun issues, like oil on drive belts.Chopper- right angle gearbox shows a little oil seepage. What grade synthetic are we talking .