After receiving a replacement for a deemed faulty MK3 from amazon.ca, I am sharing some thoughts.
The new reg has arrived and initial testing showed no leaks. In about 3 days after sitting under the pressure of 30PSI with no keg connected and the bottle turned off, I noticed a sudden drop of pressure on the HP side and by the end of the day both gauges went to almost zero.
I tightened the flare nut coupling and the leak slowed down but did not disappear.
Today I received a 1/4" BSP to NPT adapter (something to notice: KegLand regs use 1/4" BSP threads and will not be compatible with 1/4" gauges and valves in North America) and managed to install a shut off valve that I had sitting around.
Now its being a couple of hours with the reg set to 50 PSI and the bottle turned off and both gauges look dead still. But I will test for a couple of days, to make the final conclusion.
When I was screwing out the flare fitting to install the valve it actually head some thread lock or glue, which was not the case with the faulty reg. I've sent back to Amazon (something to note,
@KegLand-com-au). So I presume there might be a problem with QA/QC at least for the North American market.
Finally, I probably won't be the first to say this, but
@KegLand-com-au, please, get rid of the crappy outdated flare fitting. It is leaky. Or at least add a flare nylon nut to the standard package.