I just bought a really clean 2005 clk cabroliet with only 24k miles. It started leaving little drops of oil on the floor and the local shop said the tranny pan was leaking and tightened it up. Two weeks later it started dripping again. I took it to Aamco(should be cheaper then Benz) and they said the transmission control adapter was leaking and needed to be replaced. 5 HOURS LABOR Can it be that hard to fix? HELP