Heater core that is. Replacement failed so here’s to hoping the replacement for the replacement decided to do its job for longer than a month.... I mayyyyy have nicked the first replacement on reinstallation with a screw. Oops.
Got this far in a little over an hour this morning. Practice makes perfect after all. Then a relative called and wanted to shoot guns soooo this is where it is still at. Cold beverages have been opened and productivity has halted for the day.
Cheers to all my fella Oppos out there.
Edit: just to clarify, this is the third time that I am doing this in 2020 as there was also another replacement that failed for no reason. This replacement failed due to my screw up so I’ll own that.