I sent off the overpainted landing light for repair by AEROLeds. They offered to replace whatever parts are necessary, for $100 plus shipping. Not unreasonable given it was not their fault, and I did not even buy the light units from them. I'm expecting the landing light back any day now. I also ordered and received a third replacement lens for the light. The problem is the holes in the wing panel don't accurately line up with the support strips, so this puts lateral pressure on the holes in the less when installing it. I think I will have to drill oversize holes in this third lens. Serves me right for not originally following the landing light instructions "to the letter".
I had a second attempt at bleeding the brakes with a proper pressure vessel at the wheel end to push fluid uphill to the reservoir. Someone also lent me a gadget to attach to the reservoir so that excess fluid could be syphoned off into a container. This exercise revealed a couple of leaks which I "think" I have now fixed. There's still a couple of bubbles in the tubes, so another bleeding exercise is called for before I can call them good to go. I should have tightened up the fittings more when they were installed, "quite tight" is not too tight!
While on fluids, I filled the water radiator and overflow bottle with 50/50 water and antifreeze. No obvious leaks here.
I also put oil in the engine and turned over the prop (with plugs out) to pressurise the system. After many (I really mean many - hundreds) revolutions I was still seeing no oil pressure on the Dynon. This took some research. I eventually found a "plastic joint" in a terminal. Replacement of the offending part fixed the problem.
