As an investor who last sold out of AGY 12 months ago @ 0.63, it...

As an investor who last sold out of AGY 12 months ago @ 0.63, it seems to me that the major problem at the moment is optimizing the filtration process in the production line:
"The continued focus of the comprehensive test-works remains on the primary solids filtration circuit, aiming to improve filtration rates and product throughput, with over 78 trials completed to date. The testing comprises flowrate variation to determine the optimum operational parameters and to achieve consistent and repeatable results during this test phase, to then progress to ramping up production operations during Q1-CY2024"
This appears to be the fundamental problem that AGY needs to solve.
So, as an investor I would appreciate views from those here on where AGY is in solving this apparent problem.
I have read through the debate between various participants here and would appreciate factual replies.