Jody-
I was looking at your pics & trying to figure out if the drains were working against the bottom of the sump (however, they look like they go to the front end sides of the pan)- might they be backing up against oil in the sump? If so, would it be possible to put a check valve inline (uphill) on each return line?
I know it's a pain, but I'd do a 'weep' check on the hot side before removing it. I've found bad seals by running a Q-tip in the area where the oil will puddle inside the turbine housing. This could eliminate your drain system from being at fault.
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