cub cadet 1811hydro trans mystery leak?

Replaced leaking hydro relief valves which were clearly squirting fluid. Now fluid is showing up on right axle housing between trans and frame. Also dripping off fluid transfer tube routed from trans under filter to bottom of trans. Is there a vent or overflow opening or a common leak location? I did overfill trans after repairs to engine which required disconnecting hydraulic lines at the pump.I removed excess fluid. Is fluid level checked with engine running or off?What fluid is specified for this system?Thanks