It sounds like the problem in this TSB http://cid-54465800aad91b49.office.live.com/self.aspx/pub/TSB^_09-07-30-006.pdf, "Transmission Fluid Leak Due to Transmission Converter Housing Seal." If so, I hope they are equipped for the work. The dye fluoresces under the black light source and thus you obviously couldn't tell with the naked eye (is it possible that neither could they?).