Mike,
One step at a time: you got it running with starter fluid and then put a cup of “10-30 W” oil in the gas tank? Really? Why? This could aggravate a gum or sludge problem. Did you clean the float needle and it’s passage? If it’s stuck, no gas will get into the float bowl.
Then “still no ignition”. Hmm, you had ignition before when you were running it with starter fluid. Same comment for the spark plug gap. And then you commented that the crank case oil is like black paint. I’m not surprised the compression is low since the rings are probably worn out. And how would adding some good oil to the sludge already in there affect the ignition, that was already working?