My lines were FUBAR - both leaked. At some point early on I took the VX to a fairly reputable shop that used one of those tranny flush machines - basically it has two barbed tubes that plug into the lines going to the cooler and they pump fluid through a machine until it runs clear (pretty much, anyway). The lines started slowly leaking until they started to get really bad - from looking at the old lines I think the tubes from the machine were oversized and they basically stretched out the inner diameter - no matter how I clamped them they would seal for a while then eventually start leaking again - this was driving me nuts, plus having to hear about the spots under the VX from my wife didn't bode well...
-- John