Never had a problem like this before in my 20 years of building. Got my converter back from Precision on Oct 31 and installed that night for car show on Nov 1. Put about 30 miles on it and ran fine. Nov 1, I get home and the car is leaving drops on the garage floor. Pulled the torque converter cover and fluid everywhere. Found that seal was totally wet. Converter dry. Pull trans and replace seal. Inspect hub-no cracks, bolt converter to flexplate and turn engine over with my dial indicator on hub and maybe .0005" runout on hub at worst. Put 45 miles on car and everything dry. Drove car this morning and as I got within 100 yards of work saw smoke from fluid getting on exhaust. Look underneath and fluid pouring out of converter cover. Cleaned off so I could get car home and never leaked a drop on the way home at lunch. Put car on my lift at home and cleaned again and fired her up to run during my whole lunch break. NO leaks. All pump bolts tight, O rings on bolts new. Trans rebuilt the week before converter came back. Will not leak until I actually drive for a while and then fluid all over. Either hub wicking fluid out seal lip or ??? Can't be under the car while driving and can't get it to cooperate with me. :biggrin: Any ideas?