Question about fluid level in a Torqueflite

I'm just about finished installing a freshly rebuilt 42RH (A500) in my 70 Dart. I put part of a quart in the torque converter when the trans went in and then put about 5 quarts down the dipstick hole, until it came up to the full mark on the dip stick (yeah I know that mark is there for running hot in Neutral, but I had to use some indicator, just to get a fresh dry trans and motor going).

Nothing seamed to leak, but every time I went into the shop to work on the car, there was a small puddle of trans fluid on the floor. I could work for a hour and no drips or maybe just one. Leave it for 24 hours and there's a little puddle. I have searched all over the trans and can't find any leaks above the pan, but the pan rail at the joint between the case and the pan is wet and it apparently drips off the pan edge because no fluid on the lower part of the pan. I tried tightening the pan bolts a bit and they seem tight.

I concluded that the new pan gasket was leaking. I got a fancy LubeLocker pan gasket from Summit and am in the process of installing it. I got the pan off and one thing that I noticed is that only about a half inch of the dip stick sticks out of the case, so the fill level when running is well above the pan gasket. Are all Torqueflites like this? I presume when the car is off that fluid drains down and the level is even higher.

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