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Transmission fluid cooler lines

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On my '04 SR 5 the lower transmission fluid cooler line will not stop leaking. I replaced the radiator and I also installed new fittings for the engine oil and tranny fluid cooler lines. I have replaced the lower tranny fitting twice now and it still leaks. I just realized it could be the radiator proper. I'll have to get my Harbor Freight bore scope camera out. Any exp. you folks have on this would be appreciated!

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I bought a new lower line. I crawled underneath to see what tolls I'd be needing only to learn the cooler lines connect way up high on the tranny; it looks like the tranny has to come down to get the line out.

Another thing; what about using a rubber hose between the old line and a few inches off the new line I bought? Back in the day I fixed cracked tranny lines with hose clamps and rubber hose....

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