Still around?
I upped my Lecithin considerably up to 24 gramm a day. Not everyday though.
My cum got thicker and very clumpy. It got so clumpy I thought I cumming bricks lol.
The viscosity got off the charts. I guess thats what you labelled sperm volume.(?)
What else got you, or did you research, that increased the viscosity?
(my plan: get it to the max viscosity and then increase the fluid portion of the cum to disperse the viscosity. Some experiments with very high water intake seemed promising.)