just looking at the pics in question it seems the whole thing is in need of a severe clean up. it looks like a heavy black build up of some sort on your coil mounting plates and i zoomed as best i could to see your points and they look heavily carbonized.all would be detrimental to achieving the best spark possible.electricity needs an inductive path to flow and i dont think that goop would be helping it achieve that outcome.as you say it does have some spark so this can only improve it.hope this helps
