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4040 Transmission Fluid Leak

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Hey guys. I replaced a hydraulic hose last fall on my 4040, as well as the transmission filter. The good news is the new hose doesn't leak. The bad news is that I can see transmission fluid dripping off the bottom of the transmission. I looked closely at the hoses and the filter and there is no sign of leakage at either of these points. Could this be anything but a bad transmission seal? Are there other components hidden from view that could be the source of the leak, with the fluid migrating to the bottom of the transmission and dripping from there? Thanks for your thoughts.

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That unit has openings on all four sides with shafts and seals. The sides are known to leak and not so easy to see where that is coming from. Also possible the main hydro pump is leaking

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