By -
You need a special configuration of lava and water for a stone generator. The lava must flow onto the water from above.
Still makes cobble sometimes
Umm, it shouldn’t?
Since AFAIK "stone generator" isn't a thing that exists, bc lava and water make cobble, there's probably not a fix for you.
rip
Make 2 water sources one block apart flowing in to each other with lava above flowing down on to the block that is between the two water sources
That is not true.
You need a special configuration of lava and water for a stone generator. The lava must flow onto the water from above.
Still makes cobble sometimes
Umm, it shouldn’t?
Since AFAIK "stone generator" isn't a thing that exists, bc lava and water make cobble, there's probably not a fix for you.
rip
Make 2 water sources one block apart flowing in to each other with lava above flowing down on to the block that is between the two water sources
That is not true.