This week on Car Talk, how do you remove a foreign body from your differential? Before you call in CSI Wrench, we should explain that the "body" is merely the rubber tip from the air gun our caller Jason was using on his Land Rover. Will he and 50 of his beefiest buds need to flip the Rover over, or can he let it mature, and allow tons of grinding British steel to do their thing? Also, a valuable lesson for mechanics: when a customer complains about her brakes making noise, don't tell her the problem is hormonal; why one caller's dad may be headed to the State Pen, and, some highly scientific and only slightly limb-threatening advice from Tommy! All this, a new puzzler from Ray's Spring Break series, and lots more, this week on Car Talk.