Got my trans rebuilt 2 months ago with Suncoast parts everything except billet intermediate and output. Have had no leaks until I let her sit for 4 days then I noticed 2 wet spots under truck and the pan was soaked.
Found out the fluid is coming from the 8 pin connector and the shift shaft seal. Could it be a stuck check ball ? Or bad seals in the 2 items above. ? Thanks for the help..

 

i hope its normal, my transmission has been rebuilt with a triple disc converter and if it sits for over 7 days it will also leak. I have heard it is the converter slowly draining its fluid out. Hopefully someone will come along soon and agree.