727 Leak Inside Bellhousing

These Leaky Transmission's are hard to determine. How did you know for sure it was coming from the Bell Housing?

I don't have an inspection cover right now and you can watch it drip from inside the bell. Also, reaching in the best you can, you can feel that is puddled there. I removed the trans last night and the whole inside of the bell is wet with fluid. The front seal has about 100 miles on it, looks perfect and still has some grease on the edge. The torque converter seal surface looks smooth also, with no grooves.