transmission shaft retainer bar

[Jim M]

My 1929 roadster is leaking transmission fluid over night. In checking it out it appears to be coming from the shaft retainer bar. There was a lot of blue silicone around the nut and over the bar. I cleaned it off and removed the bolt and bar. Transmission fluid came out for a while and there was not a lot of fluid on the floor when it eventually stopped. There was no gasket under the bar and in checking my Les Andrews manual it does not appear to have one. Any ideas on how to stop this leak? Is the transmission over filled? I did not take out the fill plug to see if anything came out it. Any ideas how to stop the leak or is this just part of the beast. Thanks, Jim