So yeah, as long as this is happening, I have to resort to cheaper resins to make up for the loss and will do everything to continue working on getting these cartridges hacked and printing cheap resins.
The only time I’ve had a tank fail is when I used a third party resin. So I suggest that using cheap resins is likely to be a false economy.
As the optics. I’ve just followed this youtube video, cleaned all of the optical surfaces and restored the output to something very close to what I was getting with a new machine. So the cause of the optical problems id not exactly mysterious.