You might want to check your distance from the spark generators and potentially move your machine closer. You can have a maximum of 100 spark line blocks. I have about 12 machines connected to my spark generator stack.
The spark doesn’t go through machines so you can’t connect them one after the other unless you run the spark line in one run branching off to each machine
I dug two blocks down laid the spark cords and then put the glass over. And where it comes up to connect to the machine it’s open but then my machine is one block above.
Head to mom and pops and then to nixia head down to the workshop and then down into the basement and you can see it