Oregon 1977 K-5 Blazer - needs help

[mp1977K-5]

I've got a 1977 near stock K-5 Blazer with a TH-350 trans leaking when parked with passenger side along curb or on a slope - I've had the trans shop install a new filler tube, I've checked the lines from/to aux trans cooler.
It was rebuilt about 35,000 miles/9 years ago.
Any ideas?

 

[Derick C.]

Any warranty left on it?

 

[Mr Clean]

from N.E.

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