I took off the right mag to better expose the oil cooler fitting on the back of the engine. A standard wrench could fit. I had to grind down one of my stubby wrenches to get around the fitting on both sides. It took me quite a while to get the bad fitting out.
I installed a replacement fitting, the proceeded to install both oil cooler hoses.
Then I re-installed the magneto, which will need to be re-timed again.