Any ideas/ suggestions how to replace the regulator on "Dye Throttle"? It had never been undone/ replaced ant sits very tight. Any methods or tips how to make it not so tight/ loose it to make easier to undo?
What that video doesn't say is, if the reg has been put on using a thread locker you will need to apply heat to break the grip of the thread locker, i usually do this by sitting the bottle reg down in mug of near boiling hot water for 10 minutes or so before trying to unscrew it.
Make sure your tank is completely drained, take the fill nipple, gauge and burst disks out, preferably using the correct 7/16 AF spanner, off the reg and then clamp it in a soft jawed vice or between blocks of soft wood and use a strap wrench on the tank body. If it's tight and doesn't loosen with little effort either leave it on top of a radiator for a couple of hours or immerse it in a bucket of hot water and try again,
If there is any damage to the threads inside the tank neck it will fail a re-test on the visual inspection!
When installing the new reg, or replacing the old one, always use a new O-ring, or expect it to leak around the neck!