Stop in for a cup of coffee

Is yours the bottom coils of an old radiator? I know the trans shop did mine on a flush machine. Backflush first, but I think they run both ways a couple times. Much better than anything I could do DIY. The lines I just blast air through before installing. I rebuilt my trans, and new torque converter so nothing to flush there.

Yes, cooler routes into the bottom of the radiator. Radiator was reconditioned and installed in 2005

There's a guy up your way with a 904 out-of-car ... unknown functionality... for $100 maybe a candidate to do a rebuild on (???) I have ZERO idea what I'm doing so I may be talking crazy.