I'm a hopeless optimist! I suspect if the ore geology was...

I'm a hopeless optimist! I suspect if the ore geology was holding real gremlins the banks would have pulled the plug by now. The other issues you raised can be addressed with capital.
Sure I probably should bail out...cut my loses and run, but no! I've come this far and out of pocket and I'm going down with the ship ...however a little voice tells me I may have the last laugh.
I'm not sure why non holders are so concerned...i'm well aware of the risk.